Control media player on one phone from another I recently upgraded by old Wildfire to a Galaxy S2.  For an event I'm running, I'd like to be able to hook the wildfire up to a sound system and play music (that's on the wildfire).  However, I'd also like to control the playback using my S2.  This can be via bluetooth or wi-fi, as I can use the wi-fi hotspot feature if required.

Can anyone suggest any Apps that would allow me to do this?  So far a remote-desktop app is the best I've found, but it's a bit awkward to use.
KODI + KORE 
for those who looking not only streaming but a simple remote control over media player itself (android - to - android)
https://www.tomsguide.com/us/pictures-story/494-android-tv-remote-apps.html#s16