[LAD] [OT] CD-R masters, block error rate and dvd-r mystery...

hi everyone! for the first time ever, i have to prepare a cd-r master that will go into production without verification by the plant (yeah, i know, but my client got a *really* cheap deal ;) so i will have to make sure the data is ok and the block error rate is low. * how do i measure BLER on CD-Rs with free software tools? * how on earth can the same content burned via cdrdao to a CD-R on a cdrw drive (Plextor) and a dvdrw drive (LG) differ in several hundred thousand bytes when read back in with cdparanoia? both drives seem ok, i frequently use them to burn data cds and dvds which perform ok. any hints welcome, tia, jörn