Seeing as I've probably learned this, forgotten it and had to google it at least 10 times now, the way you listen in on running Android APP once you've enabled Android debugging and are connected over USB, is to open a dos box and use logcat from the android debugger aka ADB.
Now to figure out why loading MP3's in Unity is so slow. My app wasn't crashed, it was just taking 9 seconds to load an admittedly large music file.
Modern Tablets are quite powerful, throw in a decent stylus like the one found on the NVIDIA SHIELD tablet and some great software like 123D Sculpt from Autodesk and it's possible to sculpt and then 3D print the result through an online vendor.
How cool is that?