How to Find/Filter for 24-bit audio files in Finder or iTunes or another software (if needed)? (audio bit depth / sample size) I have a large iTunes library of lossless music. Some of it is 24-bit, which does not work on iPhones nor with Google Play (most audio is 16-bit, and this metric only applies to lossless formats). I'd like to isolate the 24-bit files so that I can convert them to 16-bit formats. How can I find them?

iTunes is aware of this as "sample size" - it appears in each file's "get info" under "File" tab. However, it is not a sortable column. It is not in Finder "get info." 


Using the appropriate filters in Finder search, does not do anything (all files appear), or, perhaps I'm not doing it right, in which case please tell me how!
I know about the auto downsampling option for iPhone sync, which is great, except that it forces you to a lossy format (max 256 kbps). There is no option for 16-bit lossless downsampling, and this does not help at all with Google Play. 
My files are in Apple Lossless format (Some were converted from FLAC using XLD and some were ripped from CD directly).
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.