Newbie at video editing. I have a wedding DVD

: that I shot. I coverted the .MDS files to Mpeg2 with REJIG. It created two files an mpeg media file and a AC3 audio file.
I can load the mpeg file to adobe premiere pro, but the ac3 file will not play in adobe premiere."incompatable file type"
What tool should I use so that it only converts the .MDS file into one file mpeg2 and audio. I bought a adobe premiere training video and I would appreciate if someone can give me a tip so I can get started.
For now I just want to be able to add affects/pictures etc....