Media consumers can elect to have local news, weather, traffic, or other perishable content inserted into customized media streams. Further, the present invention also provides a method of cathode corrosion protection which includes the steps of subjecting the substrate to a mechanical treatment, applying to said treated steel surface, the cathodic protective coating, and polarizing the coated material as a cathode. The housing includes walls defining a cavity containing electrolyte in fluid communication with the gas sensing electrode and counter electrode and wherein the walls further comprise one or more coatings or second layers superimposed on the walls. The method further includes calculating at least one control variable on the basis of the interaction variables calculated for the inner and outer particles. The oxidation step rounds the otherwise sharp corners of the silicon at the area where the trench silicon dioxide meets the pad oxide.