I merge audio books into one long track. Some of my books are up to 47 hours long. Today however I have a book that I have merged that is 13 hours long but it will only export 5 hours of it. Whats up with that? I’m windows 7, I’m using Audacity version 2.0.1 and I downloaded directly from the site.
If you’re exporting as a WAV file, the WAV format has a 4 GB size limit (may be only 2 or 3 GB on some computers)
(see: http://en.wikipedia.org/wiki/WAV#Limitations )