Hey,
I've been trying to move my openmg library the same way. I did the backup on the old computer, saving the file on another computer's shared drive. Then I restored onto the new computer. But when I try to play the files, I get the 'invalid rights management information' error. Is there another trick to get the backup/restore to work?
Another question: Can I exchange the *.omg files with a Palm using RealPlayer?