How to Find/Filter for 24-bit audio files in Finder or iTunes or another software (if needed)? (audio bit depth / sample size)
I've been fiddling with this all day - so far all I can say is 'I agree, Finder search does not find files by bit rate or depth'. MediaInfo will tell you - but that would be really tedious. 

I did notice too, that the 'Bits per Sample' flag in Finder's column view always just shows a double dash '--'
It's fine for AIF &amp; WAV, but not FLAC, ALAC, MP3 etc

I did think I had a late revelation…

EasyFind (freeware) can nearly do it. It generates false positives on some flac files I tested it against, but it did find all the 24-bit files… it just 'found' some 16-bit too for no reason I can discern.
Test 2, on 16 &amp; 24-bit ALAC files - fails, doesn't even find all the 24s… back to the drawing board.

I thought I'd just post this 'non-answer' as a 'this isn't being ignored' &amp; see if anyone else can get any further.