The DSM-520 is a neat little media streamer that not only uses a TV connection to present the user with a rich menu system for audio playback, it also uses the TV connection to stream video in 1080i HD quality. Connections include wired and wireless ethernet and digital audio and HDMI outputs and support for surround sound.
In terms of file format it includes Ogg-Vorbis support but not Flac.
Please note that the ratings are not objective in any way nor are they a measure for quality. They are a measure for what I think the target group for the device was intended to be; my expectations if you will.