On some of the JVC players you might have to record at 1x speed for them to read the disc as a CD. You might also have to use quality media instead of the cheaper media. I would use either Mitsui media which you can purchase from Master Recording Supply in CA, 800-860-4560, or try the Sony media that you can find in most stores.
Try reading some of these posts about the JVC players that have already been found as being difficult. ttp://www.mtu.com/vbulletin/showthread.php?threadid=490&highlight=JVC%2A
http://www.mtu.com/vbulletin/showthr...ghlight=JVC%2A
http://www.mtu.com/vbulletin/showthr...ghlight=JVC%2A
http://www.mtu.com/vbulletin/showthr...ghlight=JVC%2A
http://www.mtu.com/vbulletin/showthr...ghlight=JVC%2A
I hope that some of this information will help you. We don't have any personal experience the with the JVC players as most of these clients do have them.