I had a sneak view in the mpd log file.
Quote:
24 bits not supported by pcm_volumeChange!
|

My fault. Oh, I used a 24 bit flac file of Tubular Bells 2003 by Mike Olfield. That was stupid.
Please don't ask why we need a flac [a lossless audio codec] player on iLiad. Mmmh, the last Björk album lived as flac files on one of my CF card for months.