Hi Ranzenberger,
For issue one, it’s likely you have the little headphone icon (top left of piano roll) only turned on for midi track 1. Just turn it on for 2-4.

For issue 2, that’s because right now you only have 1 audio output. So, you’re multiplying every time you add a track. ALL sounds go out the mainoutputs. HOWEVER, when Overbridge is released, you can send the individual audio tracks via USB.

So, there’s no solution for issue #2 except for recording each track separately in 4 takes.