DVD1048 comes with fully decoded Dolby Digital (5.1) outputs in the back for full surround playback. The unit comes from the factory with Dolby Digital 5.1 enabled. What you are hearing is only the effects on the Front left and Front right channels being played back when your unit is hooked up to playback in stereo. In order to hear all the missing audio information into Stereo playback configurations, stereo output must be selected in the Speaker Setup Menu. Pls follow the following procedure: (1) Make sure there is no disk in the unit (2) Press Setup (3) Press the right arrow 4 times for Speaker Setup (4) Press the down arrow 1 time and press Enter (5) Select Stereo and press Setup to exit. You should now hear all 6 channels of information downmixed into stereo on your speakers