Just tried adding a Bridge to an existing Connect and while the Bridge setup completed successfully, it killed my Connect's ability to connect to my Sonos controller. I reset the router, rebooted the individual products and started the Bridge first, then the Connect and could eventually get the Connect added to my system, but then it dropped. Meanwhile, my router bandwidth went through the roof, averaging >3 Mbs, spiking to 15. On unplugging the Bridge, my network consumption dropped to Kbs. While the Bridge was plugged into my Buffalo router (DD-WRT v24SP2-EU-US (08/19/10) std (SVN revision 14998) ), my router was unable to correctly render its own management pages.
All-in-all, the experience of adding a Bridge was terrible.