You can switch music file formats. i.e. wave, mp3, cd audio....
to any fromat you desire using the program "SWITCH"
It is a free program and you can download it from
www.nch.com.au/switch
If you have the music files on your computer, just open your mp3 player
by going to COMPUTER and clicking on the mp3 player. Then just COPY
any desired music file to the MP3 player, by right clicking on the music file and selecting copy to ...(MP3 player.)