Quoting dfro(a)umich.edu:
I am having trouble finding and controlling where an
audio file ends
during export. I will go to export a small one second sample, for
example, and the cursor keeps going on and on making a large file where
there is no sound. I click on the keyboard 'goto end' key and it sends
me to a measure hundreds of measures away from the beginning. Why?
Can someone help me understand how to control where the end of a sound
file is. How do I invoke the 'end' marker or change its location?
The end of an Ardour session is controlled by the marker labelled "end"
which should be present for every session. Drag that marker to the position
you want the exporting to and.
The same applies to the "start" marker except that it controls the start of
the session.
Sampo