This one has a midi of the piece that you can you use if you want, under xenogears at the bottom: http://chaosinacan.com/music/sheets/
If I wasn't really using sheets and I learnt each hand separately, I always combined them by slowing right down to just one beat at a time and make sure both my handos are doing the right thing on each beat and then practice it really slowly like that until the whole song becomes muscle memory, and then I can speed it up a tiny bit and practice again and again and eventually I play at a comfortable speed I like.
But some of them are harder to do that with than others. There were a lots of pieces that I could play beginning to end with my right hand and same with the left hand but i couldn't combine them and i gave up. So sometimes maybe you have to try learning it a different way and that might help! Maybe you could look at getting software like Synthesia to help. Or maybe learning to read the sheet music and printing it out and then you can scribble on it to help you. You can learn the pitches with cute
mnemonics like "Good Boys Deserve Fruit" and then you can write on the paper if it helps!