I had some trouble ripping my own PS1 games in Ubuntu last month. The ripping went ok but then it seemed that the controls were messed up in the games. Turned out that you need a certain type of CD drive to get past the copy protection when copying the games.
Very annoying! Especially seeing as though I can't seem to be able to download a decent rip of Soul Reaver: Legacy of Cain whilst I have the original right next to me
Didn't see that tutorial before so I might have to give it a go, thanks for pointing it out.
EDIT: That tutorial doesn't work for me at all. Can't seem to get it to read from the cd at all even though it's already mounted