XM/Sonos " song not encoded correctly"

[Kyocerafan]

Any XM/Sonos users have any insight into this intermittent infuriating interruption of service? I'm not the only one that this affects and it never happens listening to anything else on Sonos. "Song not encoded correctly" is a questionable excuse when you can be listening for an hour and the interruption happens in the middle of the song that "isn't encoded correctly".
S
I've found references to this issue elsewhere and have yet to find any consistent or viable explanations for this problem that, in my experience, is restricted to only this relationship between XM and Sonos. Neither seems to want to take ownership of or fix the problem. Have I missed something? Given that it seems to be only an XM/Sonos issue, blaming this on my router/modem seems rather counterintuitive.

First world problem but really annoying.

 

[cademan]

Which song?

 

[Kyocerafan]

Any random song. No pattern. No particular channel.

 

[cpt_paranoia]

Loss of packet somewhere in the chain, most likely.