The Nokia hand-held computers run on a Linux operating system, and can therefore download either MP3 or Ogg Vorbis format compressed music files from anywhere on the web. Use the Mozilla web browser to locate the files (search under "MP3")and download them to your desktop, then move them to a folder you create on your hard drive, or write them to a removable memory stick.
Many of the songs posted here on the forum are downloadable MP3, and some of the members have a home page featuring downloadable MP3s of their original songs.
I hope this answers your question...