Basically I would like a triggering device connected to speakers around the room that would automatically kick in music whenever I open the door. I would like to set it to play a certain length of time, or even to stop when the door is closed. How do I go about doing this? I found this sub from a Google search and it seemed like it would be helpful, but if this post is not OK please delete and ban me accordingly! Alternatively, please suggest a sub that would be better suited to help me. Thank you!