I haven't managed to find another thread about this problem, so here it goes. I have a Macbook Pro (unibody) that's still under warranty. Yesterday while I was watching a TV show online, suddenly the volume of my speakers went down and they no longer had bass. After rebooting, making sure my software was updated, plugged/unplugged headphones etc, the speakers still sound like this. The sound is very quiet and tinny. Has anyone had a similar problem? If so, any solutions? Thanks!