Can not select Airplay Device in OSX When I click on my Airplay speaker in Sound settings, it jumps back. 
I have to restart my Mac in order to fix this problem. 

How can I fix this issue without restarting my Mac?
There is command line solution that I've found in Mac Rumors    

sudo kill `ps -ax | grep 'coreaudiod' | grep 'sbin' |awk '{print $1}'`


Which can assigned to an alias:

alias fixairplay="sudo kill `ps -ax | grep 'coreaudiod' | grep 'sbin' |awk '{print $1}'`"


Then this command fixes the issue:

fixairplay