backing up 2 films to 1 dvdr

[younso]

I want to backup two 80 min films. Both films have 2 audio tracks and 2 subtitle tracks. I would like to author a dvdr so that it starts with 2 thumbnails for the films and upon choosing one it will then show all of the original chapters. The choice of audio and subtitle can be made after the film has started, not necessary from the menu.
I have copied the films to my HD with DVD Decrypter, compressed them to 50% with DVD2One and then imported them into TMPGEnc DVD Author. Unfortuanetly this program can only choose one audio track at a time and I am not even sure that it will keep the subtitles.
Any ideas how I can do this? Is there a better program?

[younso]

c'mon help please!