You'll also find the players and lots of music. WinAMP, MAplayer, and others. I use MAplayer because it can turn an MP3 file into a .WAV file. Aficionados believe that WinAMP is the best out there. MP3 songs are compressed digital files that play as .WAV files.
Proponents claim no degradation in sound quality from uncompressed CD audio.
The rule of thumb for MP3 is 1 minute of CD music per megabyte. A CD containing MP3 audio can contain 14 hours of music. A quad-density DVD might contain as much as 400 hours. One such disk could potentially play music 24 hours a day for more than 16 days before repeating. There are also lots of FTP sites that many typical computer users can't fathom.