Hi there, you've found a mega pack full of PSX games that work!
These games are all downloaded from somewhere else on the net already, but tested and sorted for PAL or NTSC Games.
With Azureus you can choose the game you want to download from the pack by just clickinhg the iso's in it, or you can just download the whole pack and start burning cd's!
Remember downloading and uploading software is illegal but since PSX games are no longer being made, i dont think there is any other way of getting back the games you love or getting some you never played.
On last tip: Burn these iso's as slow as possible for new CD-Writers that would be 8x and for some older ones 4x. The Ps often wont read disk's burned on high speeds such as 40x.
Pull that Playstation out of your closet and get going again!