Well first it list the Supported Filetypes: PNG, JPEG, GIF, Flash (SWF), FLV or MP4 Video, MP3 Audio, DOC, RTF or TXT.
if it's just audio, transfer it into an MP3 audio file, the way I did/ do mine is using a DAW (since music and all) then save as an MP3 file or Share (Export to disc) if you're using Mac.
Well first it list the *Supported Filetypes*: PNG, JPEG, GIF, Flash (SWF), FLV or MP4 Video, MP3 Aud