if it's a normal audio CD you want to burn to you can't... audio cd's can only hold about 73-80min of music, and if you lower the bitrate first you'll just end up with 73-80min of lower quality music!
either split it onto 2 audio cd's or if your cd player will play MP3's burn it as a data disc with the MP3 file on it.
assume that it's a "raw" music file which is time not size ... cd=65 or 70 min ... therefore won't fit
convert to mp3 and it probably won't play in a conventional player .... only option is open with iso prog - ultraiso, magic iso (now I think about it ? WINZIP opens iso ... does it save?
yeah ive got it saved im pretty **** on pc lol i dont know how to do all that stuff dudes!! im strugling to convert avi to dvd aswell been at it most of tday!!