Can I convert WMA to AAC directly for iTunes?

Yes. AAC is the audio codec used inside M4A files. When you convert WMA to M4A with AAC audio, the resulting files work natively in iTunes, Apple Music, iPhone, and iPad.

Will my playlists survive the conversion?

Playlists from Windows Media Player are not transferred during conversion. You will need to recreate them manually in Apple Music or iTunes after importing the converted files.

What bitrate should I choose for M4A?

A bitrate of 256 kbps for AAC offers a good balance of sound quality and file size. AAC generally sounds slightly better than MP3 at the same bitrate, so 256 kbps AAC is often comparable to 320 kbps MP3.

Do I lose any audio quality when converting WMA to M4A?

Converting from one lossy format to another always causes some quality loss. To minimize this, use the highest available bitrate (320 kbps) for the M4A output. The loss may not be noticeable for casual listening.

Moving a WMA Library Into Apple Music or iTunes

The Music app on the Mac does not import WMA files. It never has. iTunes for Windows can transcode unprotected WMA files automatically when you add them, but on a Mac you must re-encode them first. M4A with AAC is the format that gives you the smoothest experience across iPhone, iPad, and Mac.

What ITunes for Windows Does Automatically

iTunes on Windows can transcode unprotected WMA files as you add them to your library. Open Edit, then Preferences, then General, and click Import Settings. Choose the format you want (MP3 or AAC) and a bitrate. Drag WMA files into iTunes or use File, Add to Library. iTunes creates new copies in the chosen format. Your original WMA files remain untouched.

This only works for unprotected files. DRM-protected WMA files cannot be transcoded by iTunes or any other tool. If your library contains protected files, you need unprotected versions.

Why the Mac Music App Refuses WMA

The Music app on the Mac ignores WMA files completely. Apple never added support for Microsoft's format in macOS. Drag a WMA file onto the Music window. Nothing happens. Use File, Import. Nothing. To use your WMA library on a Mac, re-encode every file.

Formats the Music App Accepts

The Music app reads MP3, M4A, AAC, FLAC, and others. For the best compatibility with iPhone, iPad, and Mac, M4A with AAC audio is Apple's native format. AAC sounds better than MP3 at the same bitrate, so it preserves more of the original quality.

Choosing M4A (AAC) Settings for Your Library

When you re-encode your WMA files, choose M4A with AAC. The encoder reads the audio from the WMA file and writes it as AAC inside an M4A container. Pick a bitrate from 96 to 320 kbps. Higher bitrates give better quality and larger files. For music, AAC at a high enough bitrate balances size and sound.

Batch Processing and File Size Limits

With a large library, process files in batches. Some tools cap batch jobs at 300 MB total. That covers several albums at once. Check the tool's settings before you start so your files fit within the limit.

Step by Step WMA to M4A for Apple Music

Follow these steps to re-encode your WMA files and add them to Apple Music or iTunes on a Mac.

Gather all the WMA files you want to process. Keep them in one folder.
Open your encoding tool and set the output format to M4A (AAC). Choose a bitrate.
Add the WMA files to the tool. If the tool has a 300 MB batch limit, check your total file size. Split into smaller batches if needed.
Start the process. The tool creates M4A files in the folder you specify.
Open the Music app on your Mac. Use File, Import and select the new M4A files, or drag the folder onto the Music window.
Check the imported tracks. Verify artist and album tags.

Checking and Fixing Tags After Encoding

Tags rarely survive the process intact. Artist names, album titles, and track numbers can be missing or scrambled. Before you import, check the metadata of a few files. Right-click a file and select Properties on Windows or Get Info on Mac. If tags are wrong, fix them in the Music app after importing. Right-click a track, choose Song Info, and correct the fields. This saves time later when you search or sort your library.

Adding Encoded Files to the Music App

Once your WMA files are re-encoded to M4A and you have verified the tags, adding them is straightforward. On a Mac, open the Music app and go to File, Import. Select multiple M4A files at once. Or drag the folder containing the new files onto the Music window. The app scans the files and adds them to your library. If you are using iTunes for Windows and did not transcode during import, add the M4A files the same way. The tracks appear in your library ready to sync to iPhone or iPad.

DRM-Protected Files

DRM-protected WMA files cannot be transcoded by iTunes or any other tool. There is no workaround. If your library contains them, you cannot use those tracks in Apple Music or iTunes. Obtain unprotected versions, either by purchasing them again from a DRM-free store or using another legal method.

For unprotected files, a tool like wmatomp3converterfree.net can re-encode your WMA files to M4A in batches up to 300 MB. The site offers encoding at 96 to 320 kbps, so you can choose the quality that suits your needs.