Hello, I have a problem

My windows and interface are like, see-through and I'm not sure how to cure it. When I log in, I can't see the buttons at the top (and no, it's not that my HUD is out of place because when I rollover near the top, the words of the various buttons appear and when I click, the window pops up, it's just the buttons are invisible)
my windows are see-through, meaning they do not block the game. If I press "I" for inventory I just see a box with items and my character in the middle. The rest is not there. It's really hard to explain, and I'm not sure what to do. Also, the music is crackly and the Hydlaa plaza tune sounds like it's slowed down for some reason.
If it matters (even though it sort of shouldnt), I'm on a Mac running a windows emulator called "Crossovers", running the windows version of planeshift. Much help would be
greatly appreciated!