I've never used Klipsch speakers, but here's an idea...
Why not invest in a home cinema receiver and some satellite speakers? You can then upgrade it with the addition of a subwoofer later. Yeah, it's gonna cost more than an integrated solution, but my experience is that "proper" hi-fi is generally better than computer stuff. you can also connect it to a DVD player if you have one, and get cracking home cinema.
The other benefit is that you can buy the bits piecemeal, when you can afford it, and so build up a great sound system, without having to save up a wad of cash for a big Klipsch rig.
Just an idea...
Calum