a video game graveyard
There you will find the music of most games listed on the site. All these modules are compatible with DeliPlayer. Beware, some of them contain more music (subsongs). To view, use the "split selected into subsongs" option in the window "Playlist" from DeliPlayer just after having loaded.
 
Download Deliplayer

Amiga modules (16.5 Mb)
This pack includes the music of hundreds of games in various formats. To read .tfx (.sng) files you need to store .sam (.ins) in the same folder.

Atari ST modules (198 Kb)
Music files, ym format.

Nes modules (86 Kb)
The integral themes from Mega Man 1 to 6 on Nes, nsf format.

Super Nintendo modules (569 Kb)
All the music from all the Mega Man games on Supernes.

All these files are compressed with Winzip and Winrar (Supernes modules).
If you are looking for other music files, turn to specialized sites.