According to the What's New section - http://wpaudioplayer.com/whatsnew/ - when you have multiple instances on the same page, play one player, then click plan on another - the initial player will stop. Unfortunately this isn't working for me.
http://ashwebdev.com/donaldmccullough/compositions/crossing-the-bar/ (Have to click on "View score and listen" button). I am doing show/hide based on the option chosen in the drop down - not sure if that has anything to do with it.
