hello friend...
i contacted lg and they said the drive will definately support writing any ? data to the subcode area. so i gave it a try anyway and used my cdrw for reading to an image file. success! it read ok then wrote it back ok and the app works fine!
i contacted pioneer for specs on my dvd drive and they claim that it will read the subcode area ok. i haven't tried it yet because i tried it before and presumed it had failed after so many read errors at the start (re my first posting).gonna try some more 'on the fly' with my dvd drive and will send you the results.
ps, do you have an address to update your database?
many, many thanks