Wireless speakers are a pain in the ass.
I want a tube amp too, and have been planning for months to get a kit. In the meantime I took old self-powered Bose speakers with 2 inputs and have one input be a new Apple TV and the other one a record player. They sound better than my janky old amp. The Apple TV just streams iTunes from my computer in the other room--it works perfectly, and it's actually nice to just have a single (backed-up) music server. While wireless speakers suck, music and video streams just fine over an 802.11N connection. The Apple TV can play WFMU, too. And I can turn off the TV's screen while having it keep playing music. If I ever wanted to play a CD, I suppose my Blu-Ray could do it, but it really hasn't come up.
(I used to have an HTPC, but a web browser on a TV is a pain in the ass, and Apple TV does Netflix streaming. I turned the PC into a headless Ubuntu web and NX server/workhorse transcoder/etc because I'm cool.)
So anyway, the Apple TV in my living room is the best "stereo" system I've ever had. It works much better than XBMC-derived things like Boxee, and is very pleasant to use.