Thanks for the response. I've checked in both Storyboard and Timeline view. I'm at the end of the project, and there are no more tracks or music objects. The attached screen shots shows nothing past 42:11, but a song begins at 42:15. I did figure out that there's a tab I can pull over to make it end at 42:11, but it seems to think there's enough material for a 55 min show.
. . . . but it seems to think there's enough material for a 55 min show. . . . .
The end range marker should automatically jump to the end of the last object on the timeline as you edit - this could indicate you have a 'ghost' object on the timeline.
Try the following:
Drag the timeline marker to somewhere near the middle of the timeline then press the End key - the timeline marker should jump to the start of the last object on the timeline, if it jumps anywhere else, ie before or after the last object, this would suggest Photostory thinks there is another object on the timeline.
Start a second timeline in the project, then track by track select the objects in the first timeline track by clicking the first one, hold down the shift key and click the last object, then copy and paste them into the new timeline, do the same for the audio objects.
Play the new timeline and see if you get the music overrun at the end.
If you do not get the overrun, save the project with a new name and then delete the first 'bad' timeline and save again.