One phone. Two jobs.
Use cases · CastSound
Use cases · CastSound. Turn the phone you already own into a wireless speaker and microphone for your Mac or Linux computer.
CastSound is built for one everyday job: hear a computer through your phone and use that same phone to speak back, without an account or extra hardware. Other products may be a better fit when you need Android-only playback, microphone-only use, or group sessions for musicians.
CastSoundUse a phone for listening and speaking with a computerAndroid, iPhone & iPad, macOS, Linux
AudioRelayMove sound between phones and computersCheck the publisher’s current support
SoundWireListen to computer sound on AndroidAndroid with Windows or Linux
WO MicUse a phone mainly as a computer microphoneCheck the publisher’s current support
SonoBusFlexible group audio for creators and musiciansDesktop and mobile
Comparison reviewed 3 August 2026. Product capabilities can change; verify current details with each publisher.
Publisher sources: AudioRelay, SoundWire, WO Mic, and SonoBus.