Thank You very much for your reply , that's correct i am using crestron integra module v3.1 . Also i have just discovered new firmware update for our Onkyo receiver which according to Onkyo website " Improves network operation when using the TCP/IP control "
As far as Sonos goes i absolutely agree . I wish that they would listen to us ( CI guys )a little bit more . They have a pretty cool and reliable product . We have been using their stuff for years , helped them grow and got absolutely nothing in return ( not to mention rather low profit margins ).