I may have the solution.
Very attractive, and your definition of cheap could be different than mine, but I feel it would fill the void nicely. I recently sold the slightly larger brother of this to a guy for $200 in a very similar situation to yours, where he wanted to use it with his computer with quality components vs. cheap/cheesy PC speakers. It is a stereo receiver, as you can tell from the picture it is very compact. Since this is a lower model than the other one and I don't have the remote I'd be happy to sell this one for $120 + shipping costs. The CD player is not included in the sale because it has a tracking problem. Until I can get it fixed it's worth maybe $20. If you're handy with electronics you might pick it up to see if you can repair it.
Let me know what you think.
Transformers Blu-ray, not included.
I haven't taken a snap shot of the rear yet, but it would look like this.
Notice it has two tape loops, 4 standard analog inputs and a phono input to top it off. Headphone output on these units is solid.