I want to use my android phone as speaker for my rpi 3 with raspbian jessie. 
As I unerstood I can't use my phone as bluetooth speaker.
The only solution I found is to use Soundwire. However I'm not able to install Soundwire server on rpi(it has special version for pi). I get following error:

Error: No default input service

An error occured while opening the portaudio stream

Error message: PortAudio not initialized

Error -10000 opening audio input device

Are there any way to stream audio to my android phone?