I forgot to look what moOde and / or my DAC did show as bit-depth / sample-rate, will try again later or tomorrow, anyway Deadbeef and VLC see them as MP3, 44100, 32bit, 320kbps, stereo, and Audacity shows 24 bit... (probably the players pad the bitdepth, and so will do my moOde, as my DAC does not support 24 bit, just 16 or 32...)
One thing I wanted to try was the volume level, an I can see that the tracks you notice not producing sound are actually the only 4 at less than half the amplitude (see attached Audacity screenshots). The other tracks are louder, very loud, also with a lot of clipping...
Try listening them again, in a quieter environment, or with headphones.
