Pick shorter songs? If you want CD Audio disk, 80 minutes is about it. If your player(s) can handle MP3 or WMA disks, you can get lots more music on the disk as a 'data' disk.
it is possible to do whats called a "overburn" on CDRs. not all burning programs can do it, but I know that nero does. You can usually overburn about 5 to 7 minutes on an 80 minute CDR. If that is not enough, there are 90 minute and 99 minute CDRs out there. here are some http://www.burnsmart.com/Prodisc-90min-CD-R-10pack-p/100.htm MOST modern audio CD players will play 90 minute CDRs without problem, but not all will play 99 minute CDRs. The 90 and 99 minute CDRs work by burning a skinnier line of dots and dashes, therefore allowing more data.
You really need to provide what you are trying to do instead of trying to solve what you precieve as the problem. Usually the problem can be solved by altering your general approch instead of solving the dead end your approch has taken you. Most standard run of the mill CD players will read 80 min which might be pushed to 90 min. Most audio CDs have 60 min or less. Obviously, you are trying to do something different. If your player reads compressed music (mp3s ect) they hold 10 hrs of HiFi music and much more at lower quality. Maybe you are asking the wrong questions. Maybe you should be asking how do I cut a 100 min audio in half so I can make 2 50 min CDs. Then you don't have to buy a new CD player as part of your solution. I do recomend buying an mp3 CD player. They are well worth the money.
My Nero warns me that overburning "could" damage the CD writer. Probably that's rare, still it's worth checking before you start. Other option is to burn them as MP3 onto a DVD, I did that once and played the DVD in my DVD player, hours of music on one little disk.
