1 of 3 bad things has just happened.
Either my headphones have stopped working, my speakers have stopped working, or my soundcard's stopped working. Now given that my headset's plugging directly into the computer and bypassing the speakers (wich are turned off) I think we can rule them out. I really hope it's not the soundcard as it's onboard and part of the motherboard wich I've only had about a year. Ideally it'll be the headset wich I can replace but, with this being good friday, I probably won't be able to replace it before this coming teusday with with some wallies insisting on having a bank holiday monday right afterwards too.