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1. Oma For Mac Keyboard
2. Oma Machine Agricole
3. Oma For Mac Mini
4. Oma For Macbook Pro

“Need help now. A lot of my music files are ATRAC (file extension *.oma) and not accessible to my LG Optimus Elite under music after i have copied to my microSD card. I'm told it is not compatible and they need to be converted to MP3. I had the music loaded on SonicStage for my Sony Walkman Bean. Is there a program available that will allow me to convert music folder from ATRAC to MP3 (when i use the conversion tool it only gives me the option to convert to ATRACplus. ” a question from Microsoft’s Community.

Those people who have Sony devices might be well aware of OMA file format. OMA file format is not a common audio file format nowadays. Some OMA audio files are even DRM protected. All of these have resulted in a question: it seems we are unable to play OMA audio files on non-Sony devices since OMA is not widely accepted as that of MP3. Hence there is an urgent need for converting OMA files for unlimited playback. In this guide, we would like to show you how to convert OMA file to MP3 format in different ways.

Part 1: What is OMA file

Before we learn how to convert OMA audio files to MP3 format, we could firstly go deep into OMA file format. What is OMA file format? AKA Sony OpenMG music, developed by Sony, OMA file is a music file and it is proprietary to Sony. OMA files are saved in the Sony ATRAC (Adaptive Transform Acoustic Coding) format. The OMA file sometimes includes DRM copy protection to prevent people from playing OMA music files that are specific to Sony devices from being played on devices or computers that are unauthorized. Therefore people have to convert OMA files to a different file type before they could play OMA files on other devices or players, generally MP3.

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The OMA file type was primarily used to distribute music for Sony, therefore primarily only Sony devices or service (like Sony CONNECT Music Store) could play back OMA files. However, this service was discontinued in early 2008 and the OMA file extension is currently not used for any other file. If you don’t have the original device you used to create or listen to the OMA files, try to convert OMA files to MP3 or other audio file formats.

Part 2: How to convert OMA to MP3 with OMA to MP3 Converter

As mentioned above, OMA files are nowadays not widely accepted by audio players or devices. To play OMA audio files, you have to convert OMA file to MP3 file or other audio formats. Here, for non-DRM protected OMA audio files, we would like to recommend you with Leawo Video Converter, a professional media converter that could convert video and audio files between 200+ file formats like MP4 to MKV file, MOV to MP4, FLV to MP4, AVI to MOV, MP4 to MP3, etc., and turn photos into slideshow video in simple clicks. With Leawo Video Converter, you could even create 3D movies and edit video/audio files.

Download and install Leawo Video Converter on your computer (it’s integrated into Leawo Prof. Media as a module).
Step 1: Add source OMA files

Launch Leawo Prof. Media and then open the “Convert” panel, where you need to click the “Add Video” button to choose “Add Video” option on the drop-down panel. Then, on the pop-up “Open” window, open the “All Supported Files” panel to choose “All Files” option and then browse source OMA audio files for loading.
Step 2: Set MP3 as output format

After loading source OMA files, right before the big green “Convert” button, there is a clickable icon displayed as “MP4 Video” by default, by clicking which you could then choose “Change” option to enter the Profile panel. Then, navigate to the “Format > Common Audio” group to choose “MP3 Audio” as output format. You are able to adjust the MP3 audio parameters like bit rate, sample rate, channel, etc. by clicking the “Edit” button on the drop-down panel mentioned above.
Step 3: Set output directory

Then, click the big green “Convert” button. On the pop-up sidebar, set output directory in the “Save to” box. You could switch the directory by clicking the icon with 3 dots.
Step 4: Convert OMA to MP3

Finally, click the “Convert” button at the bottom of the sidebar to start converting OMA audio files to MP3 format. It won’t take you long. The conversion completes quickly.
Leawo Video Converter supports batch OMA to MP3 conversion. However, as mentioned above, Leawo Video Converter is only applicable to non-DRM protected OMA audio files. What about DRM protected OMA files? Check the below guide.

Part 3: How to convert OMA to MP3 using Music Recorder

For those DRM protected OMA audio files, you have to play back them with Sony devices or make use of special DRM removal and converter tools to remove the DRM protection and then get DRM-free audio files for playback. If you have a Sony device to play back OMA file, Leawo Music Recorder could help you easily record and convert OMA files to MP3 in simple clicks. As a professional audio recorder software, Leawo Music Recorder could help you easily record any sound your computer could capture and then save into either MP3 or WAV file. It could record online music, local music and even external voice through microphone.
Follow the below steps to learn how to convert OMA file to MP3 using Leawo Music Recorder. You need to firstly download and install this software on your computer.

Step 1: Set audio source

Click the “Audio Source” icon on the bottom-left corner of the interface. To record OMA files played back on your Sony device, you should select “Record Audio Input” option.
Step 2: Set output format

Then, open the “Format” tab to choose “mp3 Audio” as output format in the “Output Format” drop-down box. You could adjust the bit rate and sample rate here.
Step 3: Set output directory

Move mouse to the “General” tab and then set output directory to save recorded audio files in the “Output” box. You could determine the folder directory here. Click the “OK” button to save and exit.
Step 4: Start recording OMA file to MP3

On the main interface, click the red button and then immediately play back OMA song in your Sony device to start recording. Click the red button again to stop recording.
Step 5: Edit music tags manually

Leawo Music Recorder could help you automatically download and add song tags like artist, album, artwork, etc. to recordings. However, you could also right click the recordings and then choose “Edit Music Tags” option to edit these tags manually.
No matter your OMA audio files are DRM protected or not, Leawo Music Recorder could help you complete the OMA audio to MP3 conversion. What’s more, the music tag adding feature makes it more convenient for you to manage recorded songs.

Part 4: How to convert OMA file to MP3 via online audio converter

Besides the above solutions, if you prefer free tools to convert OMA files to MP3 format, online audio converter would be a wonderful choice. Here we would like to recommend you FILEZIGZAG.com, a wonderful online media converter that could handle most media conversions covering video, audio, image, etc.

1. The below steps would show you how to convert OMA audio files to MP3 format online for free in detail. Make sure you have imported OMA files to computer.
1. Directly open the webpage at https://www.filezigzag.com/oma-mp3-en.aspx
2. Click on “Select” button to browse and upload OMA files from your computer.
3. Choose MP3 as the output format.
4. Enter an email address and FileZigZag will send the converted files to your email.
5. Click on “Convert” button to start conversion and wait for the conversion process to complete.
6. You will receive an email in which you can download the MP3 files to your computer.
It should be noted that this free online audio converter also handles non-DRM protected OMA files only.

Part 5: How to convert OMA files to MP3 through VLC

As to free audio converters, VLC media player could be an excellent choice, which is totally free and handles non-DRM protected OMA files only. You could not only play back media files with VLC media player, but also convert video, DVD and audio files with it.

The below steps would show you how to convert OMA audio files to MP3 file in detail with the help of VLC media player.
2. Run VLC Media Player. And on the top left corner, click on “Media > Convert / Save” option.
3. On the pop-up windows, click “Add” to import the DRM-free OMA files you want to convert to MP3, then select “Convert / Save”. Make sure you have imported OMA files to computer.
4. In the Profile drop-down list, choose Audio - MP3. Then set the output path for saving the converted MP3 files.
5. Click on “Start” button to initialize the OMA to MP3 conversion.
You won’t wait for long to get MP3 copies of your OMA audio files.

Applies to:Microsoft Defender Advanced Threat Protection (Microsoft Defender ATP)

Microsoft recommends a layered approach to securing removable media, and Microsoft Defender ATP provides multiple monitoring and control features to help prevent threats in unauthorized peripherals from compromising your devices:

1. Discover plug and play connected events for peripherals in Microsoft Defender ATP advanced hunting. Identify or investigate suspicious usage activity.

2. Configure to allow or block only certain removable devices and prevent threats.

   1. Allow or block removable devices based on granular configuration to deny write access to removable disks and approve or deny devices by using USB device IDs. Flexible policy assignment of device installation settings based on an individual or group of Azure Active Directory (Azure AD) users and devices.

   2. Prevent threats from removable storage introduced by removable storage devices by enabling:
      - Microsoft Defender Antivirus real-time protection (RTP) to scan removable storage for malware.
      - The Attack Surface Reduction (ASR) USB rule to block untrusted and unsigned processes that run from USB.
      - Direct Memory Access (DMA) protection settings to mitigate DMA attacks, including Kernel DMA Protection for Thunderbolt and blocking DMA until a user signs in.

3. Create customized alerts and response actions to monitor usage of removable devices based on these plug and play events or any other Microsoft Defender ATP events with custom detection rules.

4. Respond to threats from peripherals in real-time based on properties reported by each peripheral.

Note

These threat reduction measures help prevent malware from coming into your environment. To protect enterprise data from leaving your environment, you can also configure data loss prevention measures. For example, on Windows 10 devices you can configure BitLocker and Windows Information Protection, which will encrypt company data even if it is stored on a personal device, or use the Storage/RemovableDiskDenyWriteAccess CSP to deny write access to removable disks. Additionally, you can classify and protect files on Windows devices (including their mounted USB devices) by using Microsoft Defender ATP and Azure Information Protection.

Discover plug and play connected events

You can view plug and play connected events in Microsoft Defender ATP advanced hunting to identify suspicious usage activity or perform internal investigations.For examples of Microsoft Defender ATP advanced hunting queries, see the Microsoft Defender ATP hunting queries GitHub repo.

Sample Power BI report templates are available for Microsoft Defender ATP that you can use for Advanced hunting queries. With these sample templates, including one for device control, you can integrate the power of Advanced hunting into Power BI. See the GitHub repository for PowerBI templates for more information. See Create custom reports using Power BI to learn more about Power BI integration.

Allow or block removable devices

The following table describes the ways Microsoft Defender ATP can allow or block removable devices based on granular configuration.

Restrict USB drives and other peripherals

To prevent malware infections or data loss, an organization may restrict USB drives and other peripherals. The following table describes the ways Microsoft Defender ATP can help prevent installation and usage of USB drives and other peripherals.

All of the above controls can be set through the Intune Administrative Templates. The relevant policies are located here in the Intune Administrator Templates:

Note

Using Intune, you can apply device configuration policies to Azure AD user and/or device groups.The above policies can also be set through the Device Installation CSP settings and the Device Installation GPOs.

Note

Always test and refine these settings with a pilot group of users and devices first before applying them in production.For more information about controlling USB devices, see the Microsoft Defender ATP blog.

Allow installation and usage of USB drives and other peripherals

One way to approach allowing installation and usage of USB drives and other peripherals is to start by allowing everything. Afterwards, you can start reducing the allowable USB drivers and other peripherals.

Note

Because an unauthorized USB peripheral can have firmware that spoofs its USB properties, we recommend only allowing specifically approved USB peripherals and limiting the users who can access them.

1. Enable Prevent installation of devices not described by other policy settings to all users.
2. Enable Allow installation of devices using drivers that match these device setup classes for all device setup classes.

To enforce the policy for already installed devices, apply the prevent policies that have this setting.

When configuring the allow device installation policy, you must allow all parent attributes as well. You can view the parents of a device by opening Device Manager and view by connection.

In this example, the following classes needed to be added: HID, Keyboard, and {36fc9e60-c465-11cf-8056-444553540000}. See Microsoft-provided USB drivers for more information.

If you want to restrict to certain devices, remove the device setup class of the peripheral that you want to limit. Then add the device ID that you want to add. Device ID is based on the vendor ID and product ID values for a device. For information on device ID formats, see Standard USB Identifiers.

To find the device IDs, see Look up device ID.

For example:

1. Remove class USBDevice from the Allow installation of devices using drivers that match these device setup.
2. Add the device ID to allow in the Allow installation of device that match any of these device IDs.

Prevent installation and usage of USB drives and other peripherals

If you want to prevent the installation of a device class or certain devices, you can use the prevent device installation policies:

1. Enable Prevent installation of devices that match any of these device IDs and add these devices to the list.
2. Enable Prevent installation of devices using drivers that match these device setup classes.

Note

The prevent device installation policies take precedence over the allow device installation policies.

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The Prevent installation of devices that match any of these device IDs policy allows you to specify a list of devices that Windows is prevented from installing.

To prevent installation of devices that match any of these device IDs:

1. Look up device ID for devices that you want Windows to prevent from installing.
2. Enable Prevent installation of devices that match any of these device IDs and add the vendor or product IDs to the list.

Look up device ID

You can use Device Manager to look up a device ID.

1. Open Device Manager.
2. Click View and select Devices by connection.
3. From the tree, right-click the device and select Properties.
4. In the dialog box for the selected device, click the Details tab.
5. Click the Property drop-down list and select Hardware Ids.
6. Right-click the top ID value and select Copy.

For information about Device ID formats, see Standard USB Identifiers.

For information on vendor IDs, see USB members.

The following is an example for looking up a device vendor ID or product ID (which is part of the device ID) using PowerShell:

The Prevent installation of devices using drivers that match these device setup classes policy allows you to specify device setup classes that Windows is prevented from installing.

To prevent installation of particular classes of devices:

1. Find the GUID of the device setup class from System-Defined Device Setup Classes Available to Vendors.
2. Enable Prevent installation of devices using drivers that match these device setup classes and add the class GUID to the list.

Block installation and usage of removable storage

1. Sign in to the Microsoft Azure portal.

2. Click Intune > Device configuration > Profiles > Create profile.

3. Use the following settings:

   • Name: Type a name for the profile
   • Description: Type a description
   • Platform: Windows 10 and later
   • Profile type: Device restrictions

4. Click Configure > General.

5. For Removable storage and USB connection (mobile only), choose Block. Removable storage includes USB drives, whereas USB connection (mobile only) excludes USB charging but includes other USB connections on mobile devices only.

6. Click OK to close General settings and Device restrictions.

7. Click Create to save the profile.

Allow installation and usage of specifically approved peripherals

Peripherals that are allowed to be installed can be specified by their hardware identity. For a list of common identifier structures, see Device Identifier Formats. Test the configuration prior to rolling it out to ensure it blocks and allows the devices expected. Ideally test various instances of the hardware. For example, test multiple USB keys rather than only one.

For a SyncML example that allows installation of specific device IDs, see DeviceInstallation/AllowInstallationOfMatchingDeviceIDs CSP. To allow specific device classes, see DeviceInstallation/AllowInstallationOfMatchingDeviceSetupClasses CSP.Allowing installation of specific devices requires also enabling DeviceInstallation/PreventInstallationOfDevicesNotDescribedByOtherPolicySettings.

Prevent installation of specifically prohibited peripherals

Microsoft Defender ATP blocks installation and usage of prohibited peripherals by using either of these options:

• Administrative Templates can block any device with a matching hardware ID or setup class.
• Device Installation CSP settings with a custom profile in Intune. You can prevent installation of specific device IDs or prevent specific device classes.

Allow installation and usage of specifically approved peripherals with matching device instance IDs

Peripherals that are allowed to be installed can be specified by their device instance IDs. Test the configuration prior to rolling it out to ensure it allows the devices expected. Ideally test various instances of the hardware. For example, test multiple USB keys rather than only one.

You can allow installation and usage of approved peripherals with matching device instance IDs by configuring DeviceInstallation/AllowInstallationOfMatchingDeviceInstanceIDs policy setting.

Prevent installation and usage of specifically prohibited peripherals with matching device instance IDs

Peripherals that are prohibited to be installed can be specified by their device instance IDs. Test the configuration prior to rolling it out to ensure it allows the devices expected. Ideally test various instances of the hardware. For example, test multiple USB keys rather than only one.

You can prevent installation of the prohibited peripherals with matching device instance IDs by configuring DeviceInstallation/PreventInstallationOfMatchingDeviceInstanceIDs policy setting.

Limit services that use Bluetooth

Using Intune, you can limit the services that can use Bluetooth through the 'Bluetooth allowed services'. The default state of 'Bluetooth allowed services' settings means everything is allowed. As soon as a service is added, that becomes the allowed list. If the customer adds the Keyboards and Mice values, and doesn’t add the file transfer GUIDs, file transfer should be blocked.

Use Microsoft Defender ATP baseline settings

The Microsoft Defender ATP baseline settings represent the recommended configuration for ATP. Configuration settings for baseline are located in the edit profile page of the configuration settings.

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Prevent threats from removable storage

Removable storage devices can introduce additional security risk to your organization. Microsoft Defender ATP can help identify and block malicious files on removable storage devices.

Microsoft Defender ATP can also prevent USB peripherals from being used on devices to help prevent external threats. It does this by using the properties reported by USB peripherals to determine whether or not they can be installed and used on the device.

Note that if you block USB devices or any other device classes using the device installation policies, connected devices, such as phones, can still charge.

Note

Always test and refine these settings with a pilot group of users and devices first before widely distributing to your organization.

The following table describes the ways Microsoft Defender ATP can help prevent threats from removable storage.

For more information about controlling USB devices, see the Microsoft Defender ATP blog.

Note

Because an unauthorized USB peripheral can have firmware that spoofs its USB properties, we recommend only allowing specifically approved USB peripherals and limiting the users who can access them.

Enable Microsoft Defender Antivirus Scanning

Protecting authorized removable storage with Microsoft Defender Antivirus requires enabling real-time protection or scheduling scans and configuring removable drives for scans.

• If real-time protection is enabled, files are scanned before they are accessed and executed. The scanning scope includes all files, including those on mounted removable devices such as USB drives. You can optionally run a PowerShell script to perform a custom scan of a USB drive after it is mounted, so that Microsoft Defender Antivirus starts scanning all files on a removable device once the removable device is attached. However, we recommend enabling real-time protection for improved scanning performance, especially for large storage devices.
• If scheduled scans are used, then you need to disable the DisableRemovableDriveScanning setting (enabled by default) to scan the removable device during a full scan. Removable devices are scanned during a quick or custom scan regardless of the DisableRemovableDriveScanning setting.

Note

We recommend enabling real-time monitoring for scanning. In Intune, you can enable real-time monitoring for Windows 10 in Device Restrictions > Configure > Microsoft Defender Antivirus > Real-time monitoring.

Block untrusted and unsigned processes on USB peripherals

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End-users might plug in removable devices that are infected with malware.To prevent infections, a company can block USB files that are unsigned or untrusted.Alternatively, companies can leverage the audit feature of attack surface reduction rules to monitor the activity of untrusted and unsigned processes that execute on a USB peripheral.This can be done by setting Untrusted and unsigned processes that run from USB to either Block or Audit only, respectively.With this rule, admins can prevent or audit unsigned or untrusted executable files from running from USB removable drives, including SD cards.Affected file types include executable files (such as .exe, .dll, or .scr) and script files such as a PowerShell (.ps), VisualBasic (.vbs), or JavaScript (.js) files.

These settings require enabling real-time protection.

1. Sign in to the Microsoft Azure portal.

2. Click Intune > Device configuration > Profiles > Create profile.

3. Use the following settings:

   • Name: Type a name for the profile
   • Description: Type a description
   • Platform: Windows 10 or later
   • Profile type: Endpoint protection

4. Click Configure > Windows Defender Exploit Guard > Attack Surface Reduction.

5. For Unsigned and untrusted processes that run from USB, choose Block.

6. Click OK to close Attack Surface Reduction, Windows Defender Exploit Guard, and Endpoint protection.

7. Click Create to save the profile.

Protect against Direct Memory Access (DMA) attacks

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DMA attacks can lead to disclosure of sensitive information residing on a PC, or even injection of malware that allows attackers to bypass the lock screen or control PCs remotely. The following settings help to prevent DMA attacks:

1. Beginning with Windows 10 version 1803, Microsoft introduced Kernel DMA Protection for Thunderbolt to provide native protection against DMA attacks via Thunderbolt ports. Kernel DMA Protection for Thunderbolt is enabled by system manufacturers and cannot be turned on or off by users.

   Beginning with Windows 10 version 1809, you can adjust the level of Kernel DMA Protection by configuring the DMA Guard CSP. This is an additional control for peripherals that don't support device memory isolation (also known as DMA-remapping). Memory isolation allows the OS to leverage the I/O Memory Management Unit (IOMMU) of a device to block unallowed I/O, or memory access, by the peripheral (memory sandboxing). In other words, the OS assigns a certain memory range to the peripheral. If the peripheral attempts to read/write to memory outside of the assigned range, the OS blocks it.

   Peripherals that support device memory isolation can always connect. Peripherals that don't can be blocked, allowed, or allowed only after the user signs in (default).

2. On Windows 10 systems that do not support Kernel DMA Protection, you can:

Create customized alerts and response actions

You can create custom alerts and response actions with the WDATP Connector and the custom detection rules:

Wdatp Connector response Actions:

Investigate: Initiate investigations, collect investigation package, and isolate a machine.

Threat Scanning on USB devices.

Restrict execution of all applications on the machine except a predefined setMDATP connector is one of over 200 pre-defined connectors including Outlook, Teams, Slack, etc. Custom connectors can be built.

Custom Detection Rules Response Action:Both machine and file level actions can be applied.

For information on device control related advance hunting events and examples on how to create custom alerts, see Advanced hunting updates: USB events, machine-level actions, and schema changes.

Respond to threats

You can create custom alerts and automatic response actions with the Microsoft Defender ATP Custom Detection Rules. Response actions within the custom detection cover both machine and file level actions. You can also create alerts and automatic response actions using PowerApps and Flow with the Microsoft Defender ATP connector. The connector supports actions for investigation, threat scanning, and restricting running applications. It is one of over 200 pre-defined connectors including Outlook, Teams, Slack, and more. Custom connectors can also be built. See Connectors to learn more about connectors.

For example, using either approach, you can automatically have the Microsoft Defender Antivirus run when a USB device is mounted onto a machine.

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