The media player "Music Player Daemon"'s sound is muted once you connect to a server.
Steps to reproduce:
Configure MPD to use pulseaudio as its output.
play a song.
connect to any server.
MPD audio is muted once the connection is made.
Teamspeak [3.0.0-rc1(build 14345)]
The same config for teamspeak worked in the previous build.