yeh, its strange because the OT SE discs are so good. The volume fluctuates so bad. You can here the compression kick in on some of the louder parts and then the volume slowly increases. . Only the 5.1 track suffers with this. the 2.0 track is fine. It's nothing to do with my setup either because i ripped TPM's audio at the same time as i did the SE OT's and they were fine. Attempted a second rip and that's still the same.
Here's a quick 5.1 AC3 sample that shows what i mean