How to use ODROID like B/T speaker.

ODROID + HDMI monitor <-- B/T --> Smartphone

ODROID(car PC) <-- B/T --> Smartphone

Open Terminal Emulator.

$ su

# mount -o rw,remount /

# vi /build.prop

Add and save.

#Bluetooth Audio A2dp Sink    

persist.service.bt.a2dp.sink=true

Reboot system.

Now enable 'Media audio' item.

Connect your smartphone to ODROID via B/T and play music.