Bookmarked. Your app is awesome.

The very first thing I'd do is find an alternative to the "hammer time" animation, as much as I love that animation.

Have a background with a darker border behind the iTunes price, similar to your Amazon price. Make it light blue.

I would try to get three colors at the top. Definitely choose a good background color/gradient to apply at the top, to accent the tunemiser text. This is to draw the attention away from the fact that hard text is not anti-aliased.

Get to work on a logo, and good luck!