Smart Audio Technologies (SAT) [NPE] filed suit against Samsung, alleging infringement of a patent related to vehicle audio systems.  The accused products are described as devices “for generating and modifying a play list of a random access player.”  SAT has filed five prior suits since February 2012 against Apple, Creative, HTC, LG, and Philips.  The phrase “vehicle audio system” appears in the preamble of the independent claims and is restated in each of the dependent claims.  The patent-in-suit originated with Delco Electronics and was assigned to SAT by Delphi Technologies in October 2011.  RPX reviewed the patent-in-suit as part of an open market opportunity (Delphi) in 2008.  5/4, District of Delaware, no judge yet assigned, 1:2012cv00572.