How can I stream all audio from my Mac to my Android phone? 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?
Airfoil is available cross platform:

https://play.google.com/store/apps/details?id=com.rogueamoeba.AirfoilSpeakers