I need a little help. So I believe that with the PreSonus AudioBox USB you can record two tracks at once. Is that correct? For instance if I plug my keyboard into one input and my microphone in another could I record them both at the same time? The other question I have is if I wanted to layer tracks would I be able to plug my iPod earbuds into my computer after I recorded my keyboard so that I could than record vocals with my microphone attached to the AudioBox without capturing the keyboard playback? The reason I ask is because I don’t have monitors or a pair of headphones that I’d be able to connect directly to the PreSonus AudioBox USB, so I’d probably just output everything from the AudioBox through the speakers built into my laptop. Hopefully this makes sense, and thank you.