Thanks so much! I wish the music was my own, but I purchased it off of a site called playonloop.com. I really like their retro video game section and have used their music in a few of my hobby games now.
I'm actually a UI designer by trade (well "product designer") so it warms my heart to see someone notice the little details like you did.
I agree on the floatiness, that was probably the biggest complaint I got when I was play testing with my friends. If I ever decide to come back to this project I'll definitely be looking into playing with the inertia again.