Stuttering 24 bit alac files

I got the free Nils Frahm Solo Album in 24 bit wav on Piano Day, still free available here: .
I converted this Album to lossless m4a files (alac) and placed them on the micro SD of my Pi.

I can see and play the files in musicbox, but with a odd skipping and stuttering. I can’t see errors in /var/log/mopidy.
I’m using a CM6206-LX based USB DAC.

Likely the same or similar to High Resolution music dowsampling sort of? - basically GStreamer 0.10 and alac seems to have some limitations and the only fix is which has less and less blockers luckily.

thx for the tip. I just re"encoded" to Flac and everything is fine now.