I want to use both my speaker (with jack port input only) and my monitor speaker (jack port also). But when I connect them to my PC through "line in" and "front speaker", the PC can only detect one speaker output. If I connect the monitor speaker to my speaker. The monitorcspeaker sound would have delayed sound, about 0.5 second. What should I do or what do I need to be able to use both speaker without any delay?