Audio becomes 'out of sync.'?

[KazHaz]

Great product, used successfully once but now trying to put a slide show together with several video clips which all have audio. 
However, the audio seems to run faster than the video clips & therefore becomes out of sync.

1st clip = 19.4 secs
1.5 sec Transition
2nd clip = 32.9 secs
1.5 sec Transition
3rd clip = 8.8 secs
1.5 sec Transition
4th clip = 5.8 secs
1.5 sec Transition
etc, etc, etc, etc.....

But, before the second clip has finished playing, I can hear the audio which relates to the 4th clip - therefore, this is why it's out of sync.

Can this be rectified, if so how please?

[Jsalgado]

In this case, please open a support ticket here: https://www.nch.com.au/support/supportcontact.html?software=PhotoStage&support

We might ask you for you to send a sample of your project.