Nice. Since speed doesn't really matter when using an emulater you could implement something better than 2x in both the amikit and RTG version.
Seems you won't get rid of the good old miggi as quick as you thought. ^^
btw MI2 sounds awesome with midi !!!
Why did I never try midi with the PC version of scumm before? Oh I did but at the time I was still using the windows default midi emu.
Forget it - for WinUAE+midi+cheap onbord soundcard download VirtualMidiSynth and some cool soundfonts. If anyone can find a free MT-32 sounfont for it feel free to post a link...