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Playing or Ripping UDF CD's Under jessie

I started to play an audio CD which is part of a book and ran in
to an interesting problem.  The CD is recorded using the UDF file
system and it does play perfectly on a DVD player.

	When trying to mount the CD with

mount -t udf /dev/sr1 /media/cdrom

I got a spew of errors relating to low-level disk issues such as
sector numbers, etc and it finally gave up and never mounted.

The disks aren't bad and all the tested disks gave the same spew
be for giving up.

	The fstab file has lines like:

/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0

so it should mount either udf or iso9660 and it does mount
iso9660 with no problem.

	I am thinking that this might be some sort of copy
protection scheme which dedicated disk players can handle but
computer CDROM drives can't.

	Is this the case or am I not mounting it right?

	One CDRW drive simply reports no media when you insert
the disk and a Sony drive does try to mount it with the error
spew.  Another slightly newer P.C. running jessie also spews and

Thanks for any ideas.

Martin mcCormick