FF8's movies didn't work like that....you can't repath; like you can with FF7....they got there crap together, by not relying on DirectX's Mediaplayer and that AVI Format to play the movies.....they used there own engine, like everyone else does, nowadays.
Your only chance would be to get your friend to buy a copy off of Ebay.....or make him buy you the PSX version for you. And then just emulate it with ePSXe, or get yourself a pre-owned Playstation...they run about 20 dollars....or better yet, tell him he owes you 45 dollars.....that will cover FF8 and a refurbished PSX... might even cover a generic memory card....Although I suggest getting a Sony memory card. The generics tend to not save some games, sometimes.
(on a side note....PSX....they are making an all in one wonder machine....and naming it PSX. Supposed to be a VCR, DVD, PS2, and other stuff all in one box. Like that Tivo thing....guess we're going to have to say PS, from now on.)