Speaker Question

I think I've been looking at my speaker situation all wrong, so I thought I'd bring my question here for help to sort it out.

I have Klipsch 4.1s that I brought over from my old PC. They hooked up to my old sound card via two plugs (one is for the front speakers and one for the rear speakers) that look like normal headphone plugs. Of course, the optical out and single headphone-style out on my mac pro reduced me to only the front ones (actually I used a splitter to get all four to work, but it still isn't surround).

Anyhow, I want surround so I was looking at computer speakers that offer optical in (like the Logitech 5500s). Here's my question:

Should I instead be looking at any normal stereo / home theater setup that has optical ins? I mean, wouldn't that still give me the quality audio that I want and potentially more choices? Is there any disadvantages to my getting this sort of setup instead of "computer" speakers? Perhaps I've been looking at this all wrong. Thanks.

 

Any thoughts? I'm heading to Best Buy in an hour.

 

Well I went ahead and bought a Yamaha HTR-5930 5.1 system and it appears to work pretty well. There is some goofiness with EyeTV (apparently there is something in OS X that only allows the optical out to be used by one source-- details here: http://faq.elgato.com/index.php/faq/more/479/) so I had to go back one version on it.

Otherwise, this is a good choice and is definitely cheaper than the Logitech 5500s, not to mention it works well with my X-Box also.