I hate to bring up an old topic, but ISO compression is somthing I have put some time into. First off Tekken3. Its 44 with the audio ripped out. I have this ISO, and I got it down to 22 meg. First the audio is ripped off then put in to iso format. I then load this with epsxe or PSXeven. Then compress it with the compression tools in the emulator. The game will play just fine with no decompression. When an Iso gets this low in size you can then use 7z and get it down even better. Then use a front end like qplay to launch/extract it and play. Not all games work this well. TonyHawk uses a *****.xa file for the music tracks and I cant figure out how to rip it out yet.