liol
What version of Premiere Elements and on what computer operating system?
What sound is not heard - that from numbered Audio Tracks, Narration Track, Soundtrack?
How many prior saved closed project files (prel) have you opened and could not heard sound the existed in those files when they were saved closed?
Same particular audio file involved in each case?
Can you open a new project and maintain the sound before and after save close reopen?
Did you create narration using the project's Narration Tool and add it to a Timeline already consisting of Soundtrack and other non narration audio?
Let us start here and then decide what next.
Thank you.
ATR