Ok, I'm looking to get better sound for my home theater... but like said I don't know a thing about audio stuff. I'm currently using the TV speakers, which just isn't doing it anymore. Now do I need to get a receiver or can I get speakers that connect directly to my TV? I have a Sharp Aquos and it has an Digital Audio Output port. Can I hook something up to this? Sorry, probably a couple stupid questions, but I'm totally clueless with this stuff.