CDs are limited to 640 or 700 megabytes.
1) You've misplaced the decimal point. Your file must be around 850 Mby, not 85.
2) The only way to fit it onto
one CD is to compress the content ... but then it won't be a standard music CD and
won't play on most CD players.
Some audio "CD" players will play MP3, so you could compress using that format if you have such a player. Otherwise you'll have to edit the file and move some of the content to another file - which you could record on a second standard-format CD.
A free audio editor is Audacity, available from sourceforge.
http://audacity.sourceforge.net/
Oops: To quote the Audacity site: "Note: Audacity does not currently support WMA, AAC, or most other proprietary or restricted file formats."
It will edit WAV, MP3, etc. files.
A quart won't fit in a pint pot.