I downloaded a version of winamp a few days ago to watch some dvds and now I isn't got any sound on me PC at all when viewing or listening to anything! All I get is a single beep coming from my comp casing! Went to my audio controls and it said there was no active mixer devices available! Getting really cheesed off with it now any ideas guys?

Go into control panel and click on sounds and audio, go to hardware at the last tab and click on every single piece of hardware you have, below will show you either "Device Status: This device is working properly" or "Device Status: this device is not working properly", click on the one that isn't working properly and go to properties, then at the bottom make sure it is "Enabled" from the drop list. If still not working, on this properities tab go to driver and roll back the driver (winamp would have done something). If this doesn't work, update the driver by putting in your CD that you got with your device and follow the steps, other wise I don't know :P