MrEd ... I am no 'sound/audio engineer' but my initial thought would be that if the kb isn't built to deliver 5.1 surround sound, then you will not get it ... HOWEVER, when playing the board through it, it certainly sounds like more than just stereo ... there seems to be a greater 'depth' to the sound ... I don't think I've answered your question, so I would suggest you try to hear them for yourself ... I will say this ... I have heard some mp3 or wav files that were really split through all speakers ... sounded great ...
t.