Comment 4 for bug 367074

I'm afraid I can't, as I don't know about an nsf file that allows redistribution. Most of the files include sound track from a NES/Famicom game. Those are probably abandon ware and many of such files seem to be available at Zophar's Domain ( http://www.zophar.net/music/nsf.html ). Rest of the nsf music is created by Demo Scene folks and is often all rights reserved. 2A03.org ( http://2a03.org/ ) attempts to archive such works for future generations to hear.

Having multiple songs in one file is typical with some music format's. Most notably SID (Commodore64 music) and NSF (NES/Famicom music), where the original works were not that separate and artificially separating the songs from each other afterwards wouldn't make lots of sense. Instead starting points of the songs are marked with pointers within the file headers.