I would like for my clients to view PPS slideshows without them being able to
download the file from the website.

My goal is to let them view the slides during the training and then for
copyright purposes deny them th eability to view the slides whenver they want
to.

with mp3 files I found a way to do this. Users access an m3u fileformat that
points to the mp3 file. So they cannot download the song. If there is a file
format that would allow me to point to a pps file, so that users don't know
the actual location of the pps file but are unable to download the pps file
to their computers that would be one solution. another would be to be able to
suppress the option to save to disk.

If  file formats other than PPS  would protect the contents of my ppt file
let me know as well.

I hope somebody has an answer to this.