Thanks for suggestions guys
I added some vents, added a red outer glow on hover buttons (as shown by play button), and made the LED's look cooler. I also improved the volume/progress bars, and chose a similar but much better font:
http://i.imagehost.org/0092/Thrine.png
Not sure about the vents. I love the way vents affect a skin, but I think that these are too big. Make smaller, more rectangular areas instead.
Btw, I did post this on deviantart as a functional skin file:
http://cheeseenthusiast.deviantart.com/ ... -138971961
But the one I'm working on now is much better