Their spec sheet says the HD931 plays both DVD+R and DVD-R http://erms.samsungusa.com/customer/...=8529&SEQ_NO=1 but the manual doesn't say it does. What's up with that? I've tried playing DVD+R on my own HD931 and no luck, it wouldn't work, and I am using a very reliable Plextor 712A burner to make my DVDs. Does anyone have any insight into this? Thanks!