Computer chair lol. You trickster you! Incidentally, I'm very interested in audio production as well as gaming too. You're saying that motherboard has a good built in sound card?
Speaking to the OP, I would suggest switching to an intel CPU; I hardly understand why people still go the AMD route. Especially in this price range. An Ivy Bridge CPU would be very appropriate. Of course, you'd have to change out the motherboard for something with an LGA slot.