Here's what I do: First, I make sure to download FLAC 5.1 not DSD 5.1. That's most important because you need a player on your computer to output 5.1 and Foobar 2000 does that very well. Next, I put the files on a thumb drive, or I burn a DVD since my pre-pro is pre HDMI. The DVD or thumb drive is playable gaplessly via my OPPO-205. Now, why FLAC when the OPPO will play DSD files without conversion to PCM? The OPPO's 5.1 channel gain control requires conversion of DSD to PCM to apply desired settings. This is of ZERO concern however since I can not discern any divergence from DSD direct conversion to analog and conversion from DSD to PCM to analog. At any rate, I get my 5.1 downloads from Acoustic Sounds and from download to playback as I recall there are about 16 actions at computer, TV remote, and OPPO remote to play 5.1 so, when I can, I take the 5.1 SACD route.