Impress background sound file with relative path

I am a teacher and I have an Impress presentation with a background sound to distribute to my students.
The problem is “the absolute path of the background sound file”!

Everyone receives my presentation will have to reselect the sound file in the first slide to have the background sound.
The problem would became serious in case of presentations with many sounds in many slides.

My question is: is it so difficult to modify Impress to use relative paths for linked file instead of absolute ones?
With this solution it would became simple to share presentation, providing to put all the linked file in the same directory of the presentation file.

Tonio Tanzi

There’s an open bug about this sort of behavior: