Windows media player Audio???

My situation is this. I have a web page where i have inserted 3 Plug-ins (mp3
files). The Windows Media Player loads in my page in the three locations. I
want to encode the audio so that when you press play, all other audio stops. I
have background music playing, and the new audio plays on top . PLUS, when you
press play on one audio file, the previous keeps playing also. WITH Real
player, the other audio stops. Why not with WMP. If some one could p[lease tell
me the probably simply code for this i would greatly appreciate it. Thanks.