in case it helps anyone else. Spent some very anxious time trying to play the assessment CDs in a CD player. tested with Pavarotti, fine; DWP, just beeps. Inspiration, tried them in a built-in DVD player in the TV and they play really well, play and pause with the TV remote as if watching a DVD. Who knew? There was of course no label or covering note to say.
The following user(s) said Thank You: Gordon, Wendy Woo, SJP
