Megaboz, I apologise if my post seemed harsh, my intention wasn't to disrespect you or your adapter, which I'm sure does its job perfectly. I just felt that it needed to be pointed out that a much more suitable solution had already been mentioned. I feel bad for using the word "crap", I was just annoyed by how everyone ignored a post about an adapter that has been specifically designed for making use of all the features of the Playstation pad for any Amiga game, with mouse support, guitar support, dance mat, everything.
Personally I prefer to use all available buttons for my games. My first Amiga was the CD32, so I've always been used to having 6 control buttons and a Pause/Play button to use in my games. When I play games like Fightin' Spirit or Super Street Fighter II, I need those extra punch and kick buttons, so naturally an adapter that was designed to support these extra buttons for this system seems like the ideal option since there are all those extra buttons on the X-Arcade.
I believe the PSX64 is still a marvellous little adapter, and Shredz64 looks like an awesome game. I'm sure if anyone wanted to play Shredz, any C64 game, or any classic Amiga game that only requires 1-2 buttons then the PSX64 should do the job just fine.