Aren't you already using one USB Audio Device for your guitar?

I'd be hesitant to use another audio device in the USB if that is the case.

Because the two would have different clocks and the sync may suffer.

I'd recommend a full-featured sound device made for recording, even if it has to be USB input.

Something like the M-Audio USB series, which have built in mic preamps.

That way, you might be able to connect a Line Output from the guitar device to the Line Input of the M-Audio, which would mean that all tracks would be recorded and played back thru that device, using its internal clock source.


--Mac