Dan:

Any help would be great...

As I understand the tree spanning issue it is as follows...the hard wired SONOS units must all be connected to one common router and not pass through any other routers/switches on teh way...

This means that there are essentially three ways of wiring a SONOS system:

1. "Start" approach where each unit is wired to the same router;

2. "serial" approach where the units are all wired together and one unit is wired back to the router; or

3. A combination of 1. and 2.

What is not allowed -- after numerous network crashes and speaking with a senior SONOS engineer -- is to hard wired a SONOS unit by connecting it of a router / switch which in turn is connected to the main router...this a big no no...

With that, let me know what you think and what you may eb able to find out....

TIA,

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