> Files must be music recordings in MP3 (.mp3) or AAC (.m4a, iTunes non-DRM files) format and must be less than 100 MB in size... audio recordings that are not of songs and non-audio files (even if in MP3 or AAC format) are not eligible for unlimited music space.
Comments
Do you know if this includes filters for length? For instance would rips of audiobooks be viewed as eligible for free storage?
Answered here, somewhat: http://www.amazon.com/gp/help/customer/display.html/?nodeId=...
> Files must be music recordings in MP3 (.mp3) or AAC (.m4a, iTunes non-DRM files) format and must be less than 100 MB in size... audio recordings that are not of songs and non-audio files (even if in MP3 or AAC format) are not eligible for unlimited music space.