By the way, although a fact at the moment, this should be regarded as a limitation of Sonos, not Aruba ION. The same problem exists with almost any other WiFi solution. With multiple nearby access points, it is generally not a good idea to use identical 2.4GHz channels and also Sonos recommends SonosNet and not WiFi connectivity (or of course 100BaseT connectivity if available) for larger setups. Basically, only if you have only a single WiFi AP and maybe some Sonos speakers in its vicinity - it should be ok - otherwise use SonosNet. I personally find Sonos' approach somewhat strange, especially given the over-usage of the 2.4GHz band. Nevertheless, it would be nice to have configurable static band or channel assignments on a given network.