I apologize for a naive question...I recently bought Korg Gadget and wanted to use it with GTL. It shows up in the input source list as if the audio from Gadget could be directed to a loop in GTL. But it seems to not work. Do I have to use Audiobus to make this work, or is this a setting somewhere? Typically, when something shows up in the Input Source list, it works, more or less. Thanks for any help with this.