http://www.d-d-e.net/
: Dance Dance Evolution, has the
majority of songs from all the Dance
Dance Revolution game + a good amount of
original songs.
http://www.teamgwailo.com/ddrpccentral/
: The Melting Pot, it has many
good links to different BM98 and DDR
songs, tutorials for how to make your own
songs, and much more. Very good site.