A methods comprising a hybrid early-termination strategy and an output selection procedure for iterative decoders are disclosed. A slide unit interlocks with a switching lever spring-urged toward a push-out plate and moves away from a recording-medium travel path by being pushed by a recording medium when plugged into the chassis. The media processor is configured to detect, via the communications interface, any of the one or more additional cards connected to the communications interface to determine connected cards, and cause a playback of at least one of the plurality of media tracks in the memory in combination with at least one of the other media tracks of the plurality of media tracks on the connected cards.