Internet Archive Flac Music Repack -
Download a free tool called . Open a FLAC file. A true lossless file will show frequency content reaching 22.05 kHz (for CD audio). A lossy-to-FLAC transcode (fake FLAC) will have a sharp cutoff at 16 kHz or 18 kHz. Repacks that are "fake" should be reported.
If you are wondering why enthusiasts go through the trouble of repacking FLAC files instead of just using MP3s, the answer is . internet archive flac music repack