I have a 13.3 mid 2009 MacBook Pro, and recently the speakers have started distorting. It seems to be both speakers [changing balance from mid to left or right doesn't entirely eliminate the distortion, although seems to be more prominent on the right], and using headphones does solve the problem. I've tried looking for solutions but Google isn't very helpful. Does anyone have suggestions on how I might fix this? I reset the PRAM data [I think that's what it's called] but I'm not sure what else I can try. Any info or advice would be appreciated. I like this MacBook, but between one USB port, the battery, the Wifi card, the DVD drive and now the speakers, it seems to be dying. I'd prefer to continue using it rather than purchase USB speakers if I can avoid it. Thanks! Edit: Haven't recently installed new software, hardware or made other changes that might account for this.