Actually, most CDs are about 72 minutes.
But, no, you cannot compress it in order to get more — assuming you want it to play in a standard CD player. A standard CD’s audio is fixed at 44.1KHz and 16-bit stereo — it holds what it holds, and that’s what it holds. 😉
You could stick the files on a Vegas timeline and change the playback rate, but you won’t only be able to “compress” it so much before the audio will be distorted. (Vegas is able to change the length of audio without affecting the pitch, but naturally there is a point at which the speaker is going to fast for anyone to understand.)
The other option is to encode to MP3 and put those on a data CD instead of a standard audio CD. Many CD players (esp. car CD players) will be able to play on it, but not all of them.
Rob