Originally posted by mercatfat
Just overwrite your old midi with a file that's named the same thing.
Example: The current address is http://www.geocities.com/blah/nooneknows.mid.
Find the midi you want, let's say it's justagirl.mid. Rename it to nooneknows.mid, upload, done. Midi changed.
I wouldn't mind changing it to:
Since the midi directory is mostly empty now. Plus it's a lot easier to rename files to midi.mid instead of an actual other file's name.