So my MacBook has recently lost it's ability to output audio through the built-in speakers or another device. I'm quite frustrated as I watch and listen to tons of multimedia, and not being to hear a thing is quite sad. When I hit the volume up/down keys, all I get is the on screen audio level indicator and thats it. I've restarted a few times already, resetted the PRAM as well as the SMC and nothing improved. I want to try avoid taking it to the Genius Bar as I'm really not going to have the time to do so this week, and I believe there is a simpler solution. Thanks.