The M1 Music player plays/records ROMS:

http://www.bannister.org/software/m1.htm

you may need this front end to use the above GUI - it's been a while since I got it so not sure just try it without first. You'll need to choose a platform
http://www.emuhype.com/index.phtml?s=misc&ss=index

there is also an old computer / console music player:
http://www.bannister.org/software/ao.htm

and here is a game music archive
http://www.zophar.net/music.html

I don't think these have been updated in a while but I thought they were interesting.

Cheers