Is it not possible to record a track in your DAW, and then run the audio out from your audio interface to the audio input on the Aeros and “transfer” it to the Aeros that way (start recording a track on the Aeros and hit play on your DAW)? If the Aeros records my guitar playing through the audio input, why wouldn’t it record any audio sent through it’s audio input? I haven’t tried it…just asking.