One customer is e.Digital Corp. The San Diego outfit develops multimedia appliances such as the digEplayer, a portable in-flight entertainment system used by 11 carriers, including Ryanair, Alaska Air Group Inc., (ALK ) and Hawaiian Airlines Inc (HA ). The machine, sold by Tacoma (Wash.)-based APS Inc., stores up to 30 highly compressed movies. Economy passengers rent the player for around $10 to watch what and when they please. ``We`re constantly scouring the world for high-performance technologies that are already out there,`` says e.Digital Senior Vice-President Robert Putman.