http://www.zophar.net/index.phtml
http://snesmusic.org/

nsfやgbsも可

前スレ
★SPC総合スレ★
http://game9.2ch.net/test/read.cgi/gamemusic/1117714793/
SPC総合スレ2
http://game12.2ch.net/test/read.cgi/gamemusic/1146061170/
SPC総合スレ3
http://tamae.2ch.net/test/read.cgi/gamemusic/1177622460/