I had trouble playing local .flac files on my hi-fi. I usually stream from my Mac using the WiiM iPad app, pulling files from a server share. The native app sees the files but sorts them alphabetically, not by track #. I found a music server for my Pi that sorts correctly and connects to my WiiM

This subreddit is for the budget minded audiophile that wants to grow out of soundbars, boomboxes, mini systems, portable bluetooth, lifestyle speakers, and PC peripheral branded audio solutions. We focus on education, discussion, and sharing of entry and mid level separate & multi component audio systems. The only bad audio system, is the one you don't enjoy to the fullest.