Yeah, the main reason for the relatively short run on USB is the fact that it uses pretty crappy cable, by simply replacing a run of USB cable with CAT5 you can increase the run length significantly...
I have two 4 channel capture cards here from when I was looking at building one a while ago, but alas it fell by the way-side.
Make no mistake, I have no intention on this ending up in court (Just like I dont intend on being broken into), but it is nice to know that if it does; there are some deep pockets there to assist.