Yes the audio was ripped by someone else,I do not have the setup to rip the DD 5.1 audio,wish I did,and it is in ac3 format 1 file per side,and the specs for each file is this:
(DialNorm -27,384 kbps,Surround mix -3,Center mix -3)
and I tried as you said,sync it to the raw video and I get the same results,I get it sync'd at the start then it goes way out the further you go into the film,there is no sudden jump,it gradually goes further and further out,by the end of the video file we are talking some serious full seconds out,not ms.

Here are some things I did notice about the file lengths and frame amounts per ac3 file and video file,not sure if this will tell you anything but hopefully it will.

anh1.ac3 - 84460 frames - 45 min 3 sec
anh.avi (video) - 64514 frames - 44 min 51 sec

anh2.ac3 - 107869 frames - 57 min 32 sec
anh2.avi (video) - 83100 frames - 57 mins 47 sec

but 1 thing I looked at for the hell of it was I compared the stereo wav file I made from the ac3 file(for sync'ing) to the wav file my capture created to see how the waves from the audio line up in Audition,and they both look pretty identical,the highs and lows in the waveform almost match up perfectly,again not sure if this helps I am just graspping now to figure this out,although I did not zoom in,maybe should do that.

Thanks for taking a look,there just has to be a way to sync this.