I have an epihphone AJ200 acoustic electric...whenever i touch the out put jack when its plugged in, it stops buzzing...but it buzzes alot if i dont....is this a grounding issue?

how do i fix it?
Yeah, I think it is grounding issue. You'd need to open it up and resolder the ground wire. If I were you, I'd repost this in the Electric Guitar forum, they are better at this sort of problem.
Quote by Kensai

Awesome guy right here