Dual Audio, MMS Wont Work

I looked through webpages upon webpages here and on other sites on how to play Dual-Channel audio in Windows Media Player, with all ending up in telling me to get Morgan Media Switcher, so I did.
I downloaded it and restarted my computer. But when I tried to open WMP from then on, it told me that it had to close, it had crashed.
So, I tried opening something other than the dual-channel .AVI , even music, and it told me it crashed again.

So I uninstalled MMS and it's working fine.

Is there any other way to switch tracks in WMP 11? I really don't want another media player, and it wont let me change it in the Play > Audio and Language Tracks

Thanks