Converting PPS with audio into DVD

Hi,
I have a PPS presentation with a song heared in the background. Each picture of the presentation changes whenever I click on it, and the song is played in loop (i.e. if it comes to end before I watched all the pictures, it starts to play again from the begining and so on).

I would like to convert that presentation so as to enabled it's playing on a stand-alone DVD machine in the same way (i.e the pictures change upon each click and the song played in loop).

If it's easier to convert as above a PPT presentation, I wouldn't mind to save the said PPS as PPT and then to convert it to DVD.

Is there any program (preferable, of course, a free one), that can do it, or is there any other way to do it?

Thanks in advance for any help.
stibi