Nice article. Thanks for that.
I read it and yes, the guy I know who claims WAV sounds better than FLAC is running Microsoft Windows on his computer. After the article, something was mentioned in the comments about setting JRiver to load the entire file into memory before playback. I don’t use JRiver so I wouldn’t know, but I’ll tell my friend to investigate this. Perhaps it will make his FLAC files sound just as good as his WAV files.