I've been using MP for many years in the living room with a big screen TV, and a 5.1 powered speaker system via analog audio outputs. It's worked ok but the sound quality wasn't the best. We just purchased a AV receiver and and new speakers, with MP output connected to the receiver via HDMI, and it sounds great, but there is an issue when pausing a video or TV in MP. If it is paused for more than 2 or 3 seconds, unpausing stops playback and the show appears as if it has played to the end. Restarting play starts from the beginning. So currently we have to always remember to stop play and restart rather than pausing, which is inconvenient. What would be causing this?