How to use window media player

The problem is when you are adding in listbox1 selectedindex as well as marque _tick event which is already running is again pinging.
The solution which I feel is to make another list box or take a dynamic array to add new songs.
2 ways are there -
1. you can add old as well as your new songs in that dynamic array along with old songs existing in listbox1.
2.inspite of directly binding the songs in listbox bind it into dynamic array and then clear your listbox just before adding the new songs into it.and then highlight the already selected song which is currently running as this will not effect the current song running as the current song residing in the buffer memory of window media player.

Hope this will help.