Queing up a movie via command line
 

Basically I have set my BSP to run in multiple instances.
But I want to run a DOS-command which adds a new file to a play list, means: while I'm watching one video I'm searching the next (from my Excel list) and run then a macro which appends the next file to the existing play list. When I do this simply with "...\BSPlayer.Exe" "...\Movie.Mpg" BS starts again in a new instance.
Any Idea for help?