Keis, the problem you are having with computer grade CDR's not playing in cd players that audio grade CDR's play in is very, very unusual. It has been my experience that once finalized there is no diference between the two regarding the ability to play back. Either the cd player will play CDR's or won't. I have had some experiences where a CD player will reject a certain brand of CDR's regardless of whether it is audio or computer. I'm not saying your experiences are false, just unusual. I would like to know more. BTW, I have burned over 2500 or more CDR's, for my use or others, with at least 10 diferant brands, old and new, made in USA, Japan or Tiwain, Audio or Computer with consistant result. Either the cd player plays CDR's or it doesn't. The discs I have recorded on computer grade cd's are happily spinning in no fewer than 20 diferant types of audio cd players and none of these have rejected them and accepted only audio CDR's. PSBTW, Some players will play CDR's but never play CDRW's. Apparently the laser in these decks are incapable of reading CDRW's. Let me know more about the problems you been having, that way I can, as well as others, learn to avoid them.