DVD shouldn't be a problem, DIVX may or may not working. Consider that an Epia 800 is just barely adequet for DIVX playback, I haven't had any issues with movies encoded under 520xXXX with mp3 but will choke on 640xXXX with AC3, so it's going to depend how much the PR counts as.
It's a $62.99 board, if you look around you can find similar prices for embedded cpu boards on the net. The only reason it becomes cheap is due to the rebate but it's not guaranteed that you will get it. Only a portion of the people who buy something with a rebate will send it in correctly and on time, that's what the rebate companies are betting on to keep their money.