ScummVM now supports loading from DVD !
http://buildbot.scummvm.org/snapshots/t ... st.tar.bz2
"It works just like the Wii port, hit "R" to bring up a port specific
dialog. On the "DVD" tab, there's a "mount" button. Hit it. This has to be
done manually, because spinning up the drive everytime is annoying. You can
then add your game from the DVD to the launcher."