Problem with audio-piste in Fotomagico5

When I try to insert a music (MP3) on the audio-piste, nothing happens and if I try again, the software crashes. What is the problem ?
The problem does not arise with music proposed by software in blocks.
Thanks for your help…

If I make a slide-show in Fotomagico 4 and if I open it in Fotomagico 5 the audio-piste is well included.Is it the drag and drop which is faulty ?

See : https://forum.boinx.com/discussion/4943/import-of-audio-files-don-t-work-on-the-new-version#latest