This small BD / DVD / USB drive is very satisfying. Compact and ultra-easy to install, it has done its job. Playback of video files on external hard drive poses no concern. The USB socket is powerful enough for a hard drive usually requiring two USB ports. I have not met not recognized by this player video files. Attention to the connector. Indeed, the player has no audio output! Your A / V receiver must have an HDMI input if want to see benefit from the audio to your HiFi system. Including True HD or DTS movies in 7.1. The other solution is to connect the live player on your TV and connect your HDTV optic cable to your A / V amplifier. This will also allow you to enjoy the DVBT channels on your A / V amplifier. This is the connection that I recommend that he prevents the Dolby Digital 7.1 or DTS 7.1 by the inconsistent optical cable.