there seems to be some confusion. I am running VirtualBox on a Mac host and trying to run PCLinux as a guest. PCLinux of various kinds comes with VB guest additions installed. I have tried to reinstall them a couple times using the GA's for the versions of VB I've had. Everything else seems to run fine. shared clipboard, mouse capture, full screen etc. It's not just audio as I mentioned earlier. Videos also stutter, stop, start etc. It seems any time PCLinux needs to do something, open a window, follow my cursor etc., it causes the problem.