CJ from the Build Show walks through a Sonos distributed audio setup in a custom home, highlighting how simple it is to control music and sound across multiple zones using the Sonos app. Zones include areas like the home gym, outdoor patio, living room, guest rooms, and even the poolside. He explains the difference between wireless Sonos speakers and hardwired ceiling speakers connected via a Sonos amp. The system allows different audio sources in each zone or synced playback across the property. CJ emphasizes the ease of scaling and the value of integrated, high-quality audio throughout the home.