Unbelievable! What is it with audiophiles that they feel they have to spend crazy amounts of money on such simple things?
Any decent laptop PC can do all the streaming you want. Pick one up for $300 off of Craigslist and then spend the rest of you budget on... Well you don't need to spend it.
I've been running low cost laptop PCs running Ubuntu Linux feeding a USB line into a Peachtree DAC for years now. Sounds great. I can stream from an Internet service, or from my sizable collection of ripped CDs. I also do location recording, so I use it to play back the recordings I make.