I don't know how can that stop mplayer (actually I can't see in the log that mplayer stops).
Anyway try adding "-mixer-channel Master" to Preferences->Advanced->Options for MPlayer->Options.
I don't know how can that stop mplayer (actually I can't see in the log that mplayer stops).
Anyway try adding "-mixer-channel Master" to Preferences- >Advanced- >Options for MPlayer->Options.