When the system I was using to test this lost all USB (laptop) I started looking for other options and ran across this on pricewatch. Now, I've not tested, bought or endorse this barebones system, but after reading the "what to expect page" I did find this barebones sff http://www.eaglebit.com/ProductDetails.asp?ProductCode=EB-110-00002&Click=14 which could be built into a fairly decent system for under $350. Here is what I used for my price list (off pricewatch.com)
P4 2.6
512Meg
200gb SATA
8x AGP GeForce 6200
tuner card
If anyone knows of a better budget base system, please post. The system I was using to test lost all USB which makes it almost worthless for this project :-)
Stu
http://www.newegg.com/product/product.asp?item=N82E16811163046 -- Case, $179. Don't expect remote or LCD to work in linux, but it looks like it belongs in a theater system and it's got quiet fans.
http://www.newegg.com/product/product.asp?item=N82E16813153059 -- $60 mobo, uses nVidia integrated video and has TV out through component and composite.
http://www.newegg.com/product/product.asp?item=N82E16819104305 -- $30 proc
http://www.newegg.com/product/product.asp?item=N82E16820220089 -- $22 for DDR2 800 mem with lifetime warrenty
tuner card and hd would be extra, but I plan on this for a network boot frontend, so it doesn't need a HD. One could save a lot of money by switching to a different case. One might also want a quieter HS than the stock AMD.
Note that the first comment on the item you suggested is "Loud and HOT." A little extra money for a good case is worth it, esp if it's going in your living room.