Midis
I have a small collection of Midis from a site called VGMusic.com. I will try to get more soon.
From Pokemon Red/Blue/Yellow
Trainer Battle
Final Battle with Rival
Pokemon Center
Gym Background Music
Rival Approach Background Music
Other Midis
James Bond Theme
Imperial March
Live and Let Die (Paul McCartney)
Mario Bros.
Battle Music from Breath of Fire II