MP3-Wolf   
by Trellian   

MP3-Wolf is a Search Robot
that scans MP3 Web sites on the net and compiles an index of MP3, MIDI, Wave
and other music files as a well as a list of Ftp sites, and music related
links. MP3-Wolf can locate, sort and identify 10000's of files and links per
hour, and all delivered to your browser for download.