A system for providing an auxiliary audio input for a vehicular entertainment sound system (VESS) (42) includes a portable electronic audio device (48) for generating an auxiliary plurality of audio signals. An auxiliary output line (50) terminating at an end with a plug (52) is coupled to the portable electronic audio device (48). The plug (52) is mated with an audio input jack assembly (10) that is fixedly coupled to a remotely located region (40) of an automotive vehicle external to the VESS (42). The auxiliary plurality of audio signals are then communicated through the auxiliary output line (50) to the audio input jack assembly (10). Then, the auxiliary plurality of audio signals are transmitted through an auxiliary input line (58) to the VESS (42).