Auto detect (for finding the storage type) has never failed me. Do you have D mapped to '/media/[whatever]"? Did you check via typing "mount" in terminal or by Nautilus that you assigned a drive letter to where the disc is mounted? Cheers, Jake P.S Maybe it would be a good idea if WINE prefixes would automatically detect inserted CDs and assign them drive letters. Maybe. Or Maybe have auto-detection as an option?