Unzip and of course, none are ISO files. Some are.bin only, some.bin/.cue, a few were.bin.ecm, which when expanded were.bin or.bin/.cue, and a few have a single.cue file and two.bin (like part 1 and 2).
As a test I took one and resaved as an ISO but when I tried to play it it didn't work. So, wondering, what do you guys do? Do you convert everything to single file ISO? I read another thread about renaming the.bin file to lose the extension, which I don't think would work for the files that have no.cue. Basically looking for an easy way to make these work and look nice and organized. Making pbp is probably the cleanest solution, but by the time I learned about that I had a lot of psx roms already. Maybe I'll eventually convert them but that'll take time and it just adds another step to my cataloging.