Depends what WASAPI you speak of. I know several people with JRiver 18 on their PC's who can't use WASAPI, but can use WASAPI event style. Computer Audiophile and Six Moons have the best write-ups I've read in English, although the forums like most forums are chock full of conflicting opinions about best media players and SQ.
PC Media Players - significant SQ differences?
I have been trying some of the media players offered on the net like Media Monkey and Songbird. What I don't understand is why does VLC sound so much better? the other 2 players make the sound veiled. Is there a PC setting or program setting that needs to be adjusted on the other players or is VLC that much better, the difference is significant. FYI I am playing FLAC files from a laptop to a MyDac.