Hi - I am recording a 2 hour talk on Audacity in low bit rate 48 kbps and sample rate 22050. Probably about 50 MB. I want to send this talk to a friend on CD. How do I put it on a CD to send it as an Mp3 file? I want it to remain an Mp3 file. Thanks,

Save it as a .mp3 ---> and fill in the track information.

Then just burn the mp3 file it creates, with nero, or even Windows burning software/wizard