The company announced the release of CasaTunes 4.0 on Tuesday. While the hardware has always accommodated Internet-based radio stations, it previously worked only using wired-in speaker systems. Tuesday's upgrade includes the addition of , which lets users stream music wirelessly from their iOS devices to the server, or wirelessly from CasaTunes to AirPlay-enabled speakers.

The new software works on CasaTunes's complete --starting at $1299 for standalone servers--which let you choose which sound-system-equipped room to play which music in. The equipment comes ready to play music from Internet-based services such as Pandora, Rdio, and Spotify.

Users can .