@jeff You can still use iTunes when you have FLAC files to work with. I just use XLD ("X Lossless Decoder" - https://tmkk.undo.jp/xld/index_e.html) to convert them into Apple Lossless (no quality loss while able to work with iTunes without issue [even syncs if you have Apple Music and/or iTunes Match.])
I’m sure there’s a Windows equivalent option for converting from FLAC to Apple Lossless if you don’t want to use a Mac for the conversion process.
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