is it possible to connect an airplay wifi sony speaker to an airport extreme wireless? and stream music via airplay to?
You did not specify which model Sony you are asking about so I will answer in generalities:
1. You cannot connect any speaker directly to an Extreme via an audio cable - this is only possible with an Express.
2. You can connect a wi-fi Airplay speaker via the wireless network created by the Extreme or an Express to another Airplay device - this would be with iTunes via a wired or wireless computer or an iPhone, iPad, iPod, etc.
3. A Bluetooth speaker doesn't involve an Extreme for a connection - it connects directly to the source using Bluetooth wireless technology.
Thanks for the update - I checked out the Sony - you should be able to connect to the network but you didn't indicate which version of the Extreme you have and if it is configured to create a wireless network that you can connect to with other devices - if so then you should be able to use the Sony setup to enter the network name and password an security type to connect - and the remote app will only work if you have the Sony device connected to the wireless network first.