Try disc cleaner. Probably won't work, but it's worth a shot, right?

My first and second disc of FFVIII are REALLY scratched up. The second disc only freezes at one spot, but sometimes it just goes by really choppy and I get through it. I used disc cleaner on the second one, and all that did was stop it from going slow and choppy. It still freezes in the same spots, though DX