I was wondering if playing music located on my NAS could work fine on Haiku.
The answer is yes ! 
Even if the only audio device recognized is the jack port today, it’s working fine.
I was wondering if it was OK because the current file transfer from my NAS is very slow trough NFS (at least 10 sec to transfer a single 20Mb file…)
The music is without DRM, I don’t know if it’s rare today on the music ecosystem market, but it’s good to mention when it exists (bought on qobuz)
The ideal world would be to have USB or Bluetooth audio devices recognized by Haiku