well it looks like thats been slowed down way too much. Its amazing that it seems to be limited to the sony player thats having problems. Especially when it was a sony program that encoded the AC3 in the first place. Thinking about it sounds like that program may be thinking it should be slowing the video down from 25fps to 23.976 fps.
actually i just found this on another forum
The commands in eac3to are "-speedup" for the 24p->25p change and "-slowdown" for the 25p->24p change, as showed here:
it looks like eac3to cannot change the framerate from 24fps to 23.976, so there is your problem right there. but what you can try is first use besweet to change the framerate from 24fps to 25fps the use the slowdown function on eac3to to change it from 25fps to 23.976. this way the finished avi won't be a problem one created by besweet
not sure if you have already seen this but heres the wiki for eac3to