For the Audio CD I would try alsamixer first, I realized that some cards (or maybe the drivers) route the sound through different channels, for instance my PCM channel doesnt affect too much apps, but flash.
The webcam is maybe an issue with the module, see what module is it using with lsmod, and try to find out what webcam is it with lspci, lsusb (even when you didnt plugged it, sometimes they are wired to the usb system internally). Maybe we can find a better module for it.