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# Supported Audio Formats

The best format for audio is to provide a .wav or .mp3 file. iOS does have some restrictions on the specific encoding in an .mp3 file, so it is important to test the audio on an iPhone/iPad. Other formats like .m4a, .aiff, .au, .mov (QuickTime audio-only), etc. may be playable, and show up in Sandvox - but many browsers are not going to be able to play them. The inspector will show a warning when these partially-supported file formats have been chosen.

Protected audio and video files, such as a track bought at the iTunes store, are not going to work either; they are licensed only for the purchaser.

## File Types

### .mp3

MP3 audio is handled by most browser with the <audio> tag; a Flash-based player handles the remaining browsers.

### .wav

The fallback in this case is a windows-media <object> tag, which can be handled by both IE and Mac-based browsers with QuickTime.

### Limited browser support:

- .mov (audio-only QuickTime Movie)
- .mp4 works
- .aiff works
- .aifc
- .au

The inspector will show a warning when partially-supported file formats have been chosen.

## Related Articles

- Audio
- Media

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