That's so awesome, thanks for the info man
I tend to never get BETA releases of stuff if there's a stable one but I guess if it's safe for this i will
Not exactly beta, they are nightlies.
Just the latest milestone release tweaked with additions.
Retroarch is almost always better with a nightly.
THE BEST METHOD to run PSX games (and everything else for that matter) is via Retroarch - http://buildbot.libretro.com/nightly/
If you have any questions on how to set it up on Windows please feel free to ask, its very easy.