The internal format for Music CDs is 44100, 16-bit, Stereo. If you do your Audacity production in that format, the burning and authoring program doesn't have to do format conversion to make the disk. The natural WAV export is 16-bit Microsoft PCM which does the conversion for you if the show is already in 32-bit.
32-bit is only valuable if you have very difficult production, filtering, or effects. If you're doing a relatively straightforward music production, it may not be necessary. In some limited circumstances, as you're finding out, it may actually cause problems.
And while we're here...
Audacity 1.2 is very old and no longer supported,
patched, corrected, or updated. Audacity 1.2 can
be unstable on newer computers.
Download and install the latest Audacity 1.3 from here...
http://audacityteam.org/download/
You can install both audacity 1.2 and Audacity 1.3 on
the same computer, but only use one at a time.
Audacity 1.2 will not open projects made on Audacity 1.3.
If you use MP3 or some of the more modern audio
compression formats, get Lame and FFMpeg software
from the same web site. Do not use older software
or software from other web sites, even though they
may have the same names.
Koz