I once compiled NtEd http://vsr.informatik.tu-chemnitz.de...ted/nted.xhtml for the N810. It was run able, but not much useable. You have to redesign the UI a lot. Also timidity wasn't running... I now have a working timidity, and it's still possible to compile NtEd with only a few small changes for N900. Anyone here who is interested in this?

Edit: I'm also interested in MIDI. You'll have more luck with N810, because it support USB host mode. N900 doesn't, AFAIK. Bluetooth could be a solution, but I didn't found any working adapters. Read this: http://xmidi.com/bluetooth.html.

-Klaus