I'm sick of switching my headphone jack from my Mac to phone and vice versa. Is there any way to stream all audio playing on my Mac to my Android phone, so I can hear any audio from either my Mac or my phone through the same pair of headphones, at the same time?
Well, maybe not exactly what you want, but I can stream from my phone to my PC using standard Bluetooth A2DP profile. I can't stream from my Linux PC to my phone :-(.
Just pair the devices and I believe there is graphical tool on MacOSX to choose the source device (on Linux I use pulseaudio pavucontrol).
i used the SoundWire https://play.google.com/store/apps/details?id=com.georgie.SoundWire but it has some kind of delay i am not sure if it works on mac
Airfoil is available cross platform: