I copy ps3 games from BD to internal hdd because I haven't downloaded any ps3 games yet, currently downloading small size games of ps3 and will checkout soon.
I think they are not working from multiman due to copy from BD but I think downloaded games will work fine on multiman.I tested ps1 game and it works without any issue.
I can even pay for a site which can provide converted ps2 classics and psp games.
I just checked IPT, they want donation well that's easy for me.