hotts77
What version of Premiere Elements are you using and on what computer operating system is it running?
There are various way to change the length of a file but the consequences of the changes should be considered...
1. With the mouse cursor you could drag the file's end in or out to change its length.
2. You could double click the narration in the Project Media to bring up the Preview Windows for trimming the clip with the Premiere Windows Set In and Set Out points.
3. You could use the Time Stretch Tool to alter the duration (with a check mark next to Maintain Audio Pitch which will help to a certain degree)
What is the duration of the narration that you want to change? Is it not possible to record the narration, completing and stopping it within the wanted length?
Please more detail.
Thanks.
ATR