"I am trying to burn two albums to one CD. 29 songs, 192.5mb. The CD is 800 megs, but it also says 80 minutes. Does this mean it has a limit of 80 minutes of songs for some reason?"
I believe the songs you have are in mp3 format, is that correct? (they might be in other formats, too)
If so, I'm _guessing_ that the 192.5mb you're referring to above is the size of the mp3 files, but the files _after_ they are burned to CD will be much larger.
A music CD can hold 700mb of UNcompressed audio (16-bit, 44.1khz). That's 80 minutes, yes, but 29 songs may be "too much" -- that is, longer than 80 minutes once burned in CD format.
If you are using something like Toast, it will tell you the length of time and total size of the files you're trying to burn. This way, you won't "go over" the limit.
Unfortunately, I don't believe iTunes give you a precise "minutes/seconds" for playlist you're trying to burn to CD. Instead, it shows a relatively useless "1.2" hours, or something like that. Wonder why they don't fix this.
There are some other freeware burning apps that might work for you. I'd suggest trying "SimplyBurns":
http://simplyburns.en.softonic.com/mac