There seems to be something wrong with the sound system in my car. I realised this morning that I wasn't getting any audio from the front speakers at all, only the rear speakers and subwoofer appeared to be working. I haven't been able to track down the problem yet, but I'm hoping it's just a loose connection on the amplifier somewhere and not a break in the wires somewhere between the amp and the speakers, or that the amp itself is broken. They're not exactly cheap to replace and I haven't got the money right now.

*sigh*

Update: Panic over. It was something very simple. Somehow the Low Pass Filter on one of my amps had been switched on. Took me a while to discover this though. I'm glad it wasn't something serious!