My friend has a similar issue in that after 'Listening to tunes for x
$TIME' the Pandora (PCM) sound just stops. However, the screen indicates the song is still playing (progress bar).
He is using the HDMI - ARC (Audio Return Channel) to provide sound to his receiver (Denon AVR-E400). We are thinking about switching to S/PDIF output, instead of using ARC, to troubleshoot.
Vudu and Netflix (DD5.1) have no issue.
We recently duplicated the issue of sound dropping (while song progress bar continues) by using local media (.mp3 on USB thumb drive), which uses Stereo PCM similar to Pandora. This indicates a multi-app issue. It seems to be more susceptible to drop sound, when you are skipping songs, or changing channels on Pandora. Same with skipping through the .mp3 list.
I thought someone pointed out you could configure the TV, to output 'Stereo' sound using DTS instead of PCM, and that seemed to solve an issue related to Pandora sound.
Do you know where in the TV menu you have that option?
Did you ever find a solution to your problem?
His setup is:
TV: UN65F8000 (software version 1120)
A/V Receiver: Denon AVR-E400
Connection: HDMI ARC from TV to Reciever
We are trying to zero in on if it is an issue with the TV or the Receiver - or a HDMI handshake issue.