I can use OPL 0.8, but have 0.7 running now.
I copied a game to the proper format with ul_install (direct from dvd disc didn't work). It runs perfectly in USB mode.
But how do i add more? There were some problems with the ISEKO tool not wanting to convert my game (Bully), so i had to choose ul_install.
There is an option to hex edit the ul.cfg file, but i don't want to go down that road.