I agree its very unusual. Although I prefer using PictureTo Exe, for this project which I need for tomorrow I have it done using another software. The sound turn out ok with exactly the same number of slides and music, but I will use it only as my Plan B. It shows that the fault is not my computer. It is possible that the Pte may have been corrupted. Between now and tomorrow I continue to work on the same project using Pte and would like to tell you and Ken what I have done this morning. As I indicated in my original post, I found out that the music duration is 00.00. I clicked the Timeline tab to open the "Customize Synchronization" window which indicates 'Please go to the Music tab in the Project Options and add sound file(s). At the bottom of the same window, it shows the number of slides of 113; transitions, 113, music duration,00.00; and position, 00.00.00. Having checked to confirm that the sound files have been added, my guess is that the Music duration of 00.00 is probably the problem. Within the Customize Synchronization window, I clicked "Timed Points" which shows 8 options to add and arrange time points and set time of points. When I clicked any one of them, nothing happened. I also tried the 'Import points from another Project' option....the end result: a window showing "no transitions in this project." The project I tried to import from is a succesful project. From what I have done so far, I suspect that the program may have been corrupted. If so, how do I reinstall the software? I purchased it online with no disc. Thank you and Ken for the help so far. Any more help can be offered is much appreciated. Shik Lee