I got ImgBurn to create a .bin of the PSX TFTD version easily enough, but from then on out it was nothing but trouble. ePSXe just crashes when I try to run the .bin and the same thing happens when I try to run TFTD directly from the PSX disc. I have a sneaking suspicion I didn't configure the program correctly as there is a error message sometimes: PSX Bios not found. ePSXe was not able to find a psx bios in your epsxe bios directory. You can use the HLE bios [yadda, yadda, yadda] but keep in mind that you can only have this file LEGALLY when you own a REAL Playstation. Dunno what's up there, and like I said I'm not very software savvy.
Looked on Steam for RetroArch. There's a page for it but the release date is TBD and it says Coming Soon when I added it to my wishlist.
See? Ten years later and nothing's changed.