Issue with Reference Recording HRX wav files

[Roy Boy]

I am running the latest Minimserver on a Synology DS1813+ with a Lumin streamer. I have DVD media of many of the Reference Recordings HRX high resolution albums which are WAV files with 24/176 resolution. I basically copied the files directly from the media to the /Music volume on the DS1813..
However my Lumin control point app (running on IPAD) does not see any of those albums or artists. I am wondering if I need to convert those wav files to some other foirmat like AIFF or ALAC (to maintain resolution) to "play nice" with Minimserver? A second option would be to try and tag the albums/songs.

What would you recommend?