Supported Audio File Formats The following audio file formats are supported by iPod nano. These include formats for audiobooks and podcasting:
Â AAC (M4A, M4B, M4P) (up to 320 Kbps) Â Apple Lossless (a high-quality compressed format) Â MP3 (up to 320 Kbps) Â MP3 Variable Bit Rate (VBR) Â WAV Â AA (audible.com spoken word, formats 2, 3, and 4) Â AIFF
A song encoded using Apple Lossless format has full CD-quality sound, but takes up only about half the amount of space as a song encoded using AIFF or WAV format. The same song encoded in AAC or MP3 format takes up even less space. When you import music from a CD using iTunes, it is converted to AAC format by default.
Using iTunes for Windows, you can convert nonprotected WMA files to AAC or MP3 format. This can be useful if you have a library of music encoded in WMA format.
iPod nano does not support WMA, MPEG Layer 1, MPEG Layer 2 audio files, or audible.com format 1.
If you have a song in iTunes that isn’t supported by iPod nano, you can convert it to a format iPod nano supports. For more information, see iTunes and Music Store Help.