Looking for Napster/Rhapsody Source Code for UE/SB

Hey Guys,

that is a great forum but a little bit hard to find :p

I would like to know, how addons for UE Smart Radio or SB are distributed from logitech webservers to UE or SB.
I captured the network traffic of my UE by using my FritzBox and WireShark while installing a new addon via logitech web ui.
But I did not found, what I expected to found....

It is an untypical request and I am likely to find nothing but
I am looking for source code/scripts/binaries for the napster/rhapsody addon for UE Smart Radio (or SB).

Thanks for your time.

Greetings
Stefan