Because I can't think of any other game tune right now, and because I can't find it in MIDI, it is in mp3. 8 bit sound compresses great, though, so I managed to put a 40sec audio clip into just 120KB, which should be less than half a minute download even for the 56Kers. Considering the fact that it is smaller than the file that SupSuper posted in .mod format, I don't think anyone will mind.
Correction: It is a zip file. You'll have to extract it. Forum doesn't take mp3s. Not even very, very small ones.
If you heard this tune before, you'll probably know what game it is from right away. Also, you might have heard a nicer, cleaner, arcade version of this tune, which I don't have a copy of.
None of my projects (Minus One converter, W3D/W4 Map Viewer, and WMapEditor) are endorsed, supported or otherwise affiliated with Dream17. I just find Dream17 forums to be a nice place to share and discuss my work with others.