This may be a really dumb question - but I am not up on music stuff. Can I add a music file from a CD to one of my slide shows? If so, how? On my CD they are CD audio files and I know that for pte they have to be mp3 files. What is the difference between the tracks on my CD vs. an mp3 file - I know its a music file of some sort? In order to add one to my slide show do I have to buy a different kind of music??? Can I convert a CD audio file to an mp3 file?