Let the hive mind of Engadget get that for you.
"I am looking for a device that will stream sound from one source to several recipients. For example, I want to stream sound from my TV or stereo to my phone or MP3 player that has radio and Bluetooth capabilities. I have looked into radio transmitters and they seem like a decent choice, but I can't find one that uses external power (USB or from the plug) and I would want one with a transmit range of around 50 meters. Thanks!"
Thanks, Ben and Steve, for helping me with my question. I think Popcorn Hour may be the way to go! I keep hearing about them coming out with new models, though, so I wonder if I should wait a bit and see what happens.
But, if I go forward, I think you guys are right about the nature of stream for HD. I live in a fairly rural suburban area with only one other network visible, but if I can just wirelessly drag and drop the files to a HDD attached to the popcorn hour and then stream straight from there, I won't have to worry about it! In fact, I could load up all of my existing stuff onto that drive right from my computer before hooking it up to Popcorn Hour to give me a head start, then just transfer over new stuff as I get it.
Now, I have to see about buying one, since it seems they are hard to get. The Linksys seems good, too, but I have some weird codecs with my video camera (a proprietary HD MOV that I have to convert to avi) I am hoping PH can handle without conversion.
Of course, just today, you guys announce more Boxee goodness, which keeps AppleTV in the running, especially since I only have a 32" 720p TV.
I may wait until after the holidays to see how everything plays out in this field.