A prosthetic heart valve assembly includes a gasket member and a valve member including a plurality of fasteners and a plurality of engagement members corresponding to the fasteners. Thus, upon completing a financial transaction to pay for the required audio tracks, the end user is enabled to download and decrypt encrypted music tracks and to play them on the end user’s personal computer. The acoustic transducers can comprise piezoelectric transducers, including piezoelectric polymeric transducer materials. Each block has a predetermined number of signal lines. The present invention uses the fluorocarbon gas under conditions that enhance selectivity of the etch to nitride with respect to a bulk dielectric material such as doped and undoped silicon dioxide. The deck is coupled with the arm assembly.