MP3/iTunes working, no .flac/TiDal?

So i've tried everything, but to no end. I cannot get anything that is above .mp3 to play on my touch. i can load a file as .mp3 and it will work. or an .aac stream - no problem, but not tidal. i cant get any of my local flacs to play, but mp3s stored on the same strive in the same folder will play. i've tried all the typical things: restart, wipe, reinstall. it was through all the reinstaling/uninstalling/troubleshooting that i figured it out it was the format that seemed to be the problem, not the player or dac.

FYI: SBT->schiit DAC LMS7.7 running on a mac mini server

thanks!