[B38] A couple of graphical bugs and crashes

[Anno]

I've had some serious issues running ToME on my computer. I'm not entirely sure why either.

My machine is running Windows 7 64 bit, with 6 GB of RAM and multiple processors. It's nothing at all about memory problems, or hardware not matching the game.

The problems really go as follow:
Mountains decide to become plains after I enter or leave a couple dungeons.
For some reason the game's music and sounds have just decided to stop working. At all.
The item Crystal Focus causes a complete crash of ToME- After selecting an item to use with it the entire screen begins flickering, and the game is unresponsive.
After 2-3 hours of playing the game, occasionally all pop-up windows become whited out. This is usually followed a couple minutes later. Restarting the game fixes this one problem, the other three are not fixed by it.
For some reason the game's music and sounds have just decided to stop working. At all.

And that's about it. I'm sure there's a couple more but I can't actively think of them right now.