A process for making Al\u2014Zn\u2014Mg alloy products, and products formed according to such processes are disclosed. In the method, a first audiovideo stream including audio data, video data, and supplemental data is stored. The electro-magnetic actuator is provided for producing a variable axial electro-magnetic force acting to the spool valve so as to selectively adjust a position of the spool valve in the fluid control passage in order to selectively control a flow rate of the hydraulic fluid in the fluid control passage.