I have a CasaTunes CT server to connect all the AirPlay devices around my house. It appears that Simple Control can only select music but not direct it towards specific rooms. The CasaTunes manual recommends a URL Scheme for switching between the apps. Unfortunately URL Schemes don’t work when guided access is enabled.
In the Casatunes app, individual rooms can be turned on, off, grouped, and have volume control. Any chance this functionality will be added to to Simple Control?