When burning a cdr you must close the session before it will play. Some software allows for the burning of the disk and leaving it open so that you can add more at a later time. I don't think cdrw's will play on anything except computers. probably due to the fact of not being closed. I play cdr's on my Theta Miles and a Magnavox cd650 (circa 1988) with no problem. Remember it must be burned as an audio disk. Audio cd's are no different than standard cd's. Make sure you don't use el cheapos. Color doesn't seem to be a big factor anymore either. Here's some good links for cdr info
http://cdrfaq.org/
and
http://www.cdmediaworld.com/hardware/cdrom/cd.shtml
http://cdrfaq.org/
and
http://www.cdmediaworld.com/hardware/cdrom/cd.shtml