I received a Roland Sonic Cell for Christmas. It's detected, as both an audio and MIDI device on my Fedora 12 box. According to the manual, there's a way of listening to the MIDI instrument output over the USB audio connection and I've set it up following those instructions. However, I haven't been able to listen to that output over USB - only over the headphone connection. It shows up in pavucontrol and qjackctl. I'd be grateful for any suggestions. In qjackctl, it's listed as: hw2: Sonic Cell hw2,0: USB Audio My current JACK invocation is: jackd -R -P4 -dalsa -r44100 -p512 -n4 -D -Chw:0 -Phw:0