Ice Age 3 - Audio Issue or bad disc ?

[wallendo]

I just bought Ice Age 3 and the movie looked and sounded great until the 52:31 mark when the audio stopped. I was able to get the audio restarted by changing to another language and then back to DTS HD MA.

I am bitstreaming from a Samsung BD-1500 to an Onkyo TX-SR706.
If I set the BD player to internally convert the audio, I get about 1-2 seconds of garbled audio and then everything is fine for the rest of the movie. I have inspected the disc and wiped off fingerprints. There is no loss of picture quality during this period.

I bought this at Wally World and really don't look forward to exchanging it. So, before doing so, I wanted to see if anyone else has had similar problems. I'd hate to go through the exchange hassle only to still have problems.