OP, here's a means to get playback of multi-channel music stored in PC's music folder : connect PC to your receiver via HDMI and from a player which accommodates your multi-channel music downloads, such as Foobar 2000, if you've downloaded multi-channel FLAC files, just set your receiver to HDMI input from PC and then control desired music playback from the player. That's it. This means to multi-channel is gapless too, which is not always the case with a wireless Network connection. Now, another means to multi-channel music stored in your computer is via usb drive port connection from computer to receiver but this connection, while excellent, has about 15 steps from your receiver's menu to get to the music you want to play but it eliminates the need for play via a media player app on your PC.