Need more info on when and why. If its a particular cd with an identifiable scratch, the cd can be treated with something like DiscDoctor or just gently sanded/polished at the scratch with an extremely fine abrasive. If it happens on occasional cd's, its probably due to muting caused by cd surface defects too large to be correctible by cd standard error correction algorithms - in this case the cd is defective for your player and can be returned. If it's happening too often on a given transport/player, it can either be that the transport is exceptionally prone to mute during normal cd read errors (I remember an older Spectral transport with this reputation), or possibly, in the last instance, that the transport is defective. Most players should not be highly prone to skip because of vibration - in fact some Pac Rim manufacturers quality test their players by throwing tennis balls at them and expect them to keep on playing during the impact.
Good luck.
Good luck.