It's also under Tools > Options > Player.

http://www.ventismedia.com/mantis/view.php?id=10320

i've also searched a very long time. only with the help of lowlander i'm able to find this functionality.
i think this function should be mor in the foreground. maybe in the menu on top as a little pull down?

Right click on Player and use Select Player.

I've installed 4.1.0.1622 beta. But I can't find the functionality to use MM as control point. I have a mediaserver-device for my hifi-system. But I don't know, how to stream Music from MM to mey mediaserver-device.

MediaMonkey 4.1 (currently in beta in the Beta Forum) can do this.

do you now any plugin that enables some "play to" functionality known from windows media player? if there is none, maybe i need to create my own - any suggestions of tutorials in this field? cheers matt