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://audacity.sourceforge.net/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.