wow, a series of baffling posts...
kicks: this IS just the skin. i don't know where you got the impression that it in-cluded anything else, but there it is...
jack003: it is the size that it is because XBMC is very complicated and there's a ton of media that goes with this skin, which leads nicely to
XboxMan: the video/animations displayed in the various orbs are some crazy formatted video that is part of the skin. i say crazy format because instead of each being a single file, he's got like each frame of animation as a seperate graphic file. anyways, there's like 6 of thems, which accounts for a good portion of the skin's size. to answer your question, the videos are sitting on the harddisk and thus will not change unless YOU change them.
nige: rapidshare is kindof crappy sometimes, i had problems with it the first time i went there, but tried later and it worked like a charm. i use Firefox 1.5, i honestly don't know if it's an issue with AOL's crappass web browser or not...
prlr99: it's free, which is why you can download it off of rapidshare and not pay for it (i should have thought that to be self-evident...)