Device grouping for audio based interactivity

Techniques are described for grouping multiple computing devices into a device set to enable shared audio functionality, or other types of shared functionality, between the devices in the device set. The devices may provide audio output, audio input, or both audio output and input. The devices may discover each other via transmitted radio signals, and the devices may be organized into one or more device sets based on location, supported functions, or other criteria. A voice command received at one device in the device set may be employed to control operations of other device(s) in the device set. Shared audio functionality between devices in a device set may also enable synchronized audio output through using multiple devices in the device set.