Well... I've also got the sound problem(s) on my 13" MBP. I've got Windows Vista Home Premium, and both the problems: the mic is not working at all, and the sound is very very weak. That is, I've been playing Modern Warfare 2 today, and when people were talking, I had to choose between getting closer to the speaker and reading the subtitles. I found a fix on some web site some time ago, but it was only for the 32-bit version, while I've got the 64-bit one. So, please, could anyone provide me with some support?