I'm gonna try that cd burner program because I am having BIG problems with the WMP. Have you tried it? Did it solve any of YOUR problems? I don't get what's going on with WMP. It doesn't do half the things it used to. I used to have no problems using it to burn my own music to CD, but now suddenly it won't even do that. Weird.
Don't have the sound and video problems that you were having though.
I have to use Quick Time to play videos now. Anything that depends on WMP won't play the sound for them and I even downloaded all the extral codecs too.
I downloaded the CD burner before I posted it and it works fine for me so far. Works alot like Nero. One thing when you drag and drop you need to get it exactly in the right spot or it gives an error. After a few times like that you'll have it all figured out. It's pretty easy.