Fair enough. I should say that in order to make just an SD card player then we would still have needed some sort of wireless connection for control. WiFi is still the best way of doing this when you have very large numbers of tracks stored on an SD card. Our only other option would have been to add buttons and a display which would have added a different layer of complexity. I accept in your case you don't need everything that Poly has to offer but it does give it a lot of flexibility that many people have found they didn't think they would need until they started using it.