Found below are various files, usually in MP3 format, of themes heard in any Mega Man game. The goal of this archive is not to put the soundtrack of all the games available in both MP3 and MIDI format: other websites already cover those areas. It focuses on rare tracks and fan remixes. Several of the official songs available here have been ripped by myself.
You can download these files and keep them for your private use. Remember: Capcom owns the full copyrights over the original material.