I've been attempting to hook up my keyboard to my computer (running Ubuntu 11.04 Natty) to use with LMMS, but I havn't had much success.

I connected my keyboard to my Creative Sound Blaster Live! video card using a MIDI to DA-15 adapter.
I've tried installing JACK, as well as the Ubuntu Studio sound package from Synaptic, but so far nothing has really worked.

Anyone have any suggestions? It would be greatly appreciated