Coated abrasive articles comprise a composition comprising binder and at least about 25% by weight graphite particles, based on the total solids content of the composition. The ski or sports apparatus provides an upper service adapted to receive a binding device for retaining a boot, the binding device including an anchoring mechanism to anchor the binding device to the ski, the anchoring mechanism including a slide and at least one tightening mechanism which enables the binding device to be forced in place against the upper surface of the ski or sports apparatus. This enables audio information to be combined in a way that keeps all content active and editable until the final product.