Pops, snaps and tearing noises during playback is primarily a DAC issue caused by clocking or jitter problems. Specifically, when changing tracks and you hear a noise whenever the DAC switches between sample rates the DAC or the driver is usually to blame.
A quick search pulls up many reports of this DAC board having audible clocking issues.
A couple of ways to relieve the snapping sounds could be to enable resampling in Moode's audio settings which can force the DAC to stick to a specific clock/sample rate. You could also try to increase mpd's buffer in case your network is problematic this is under [Configure] > [MPD] > [Audio Buffers], try doubling the value. Ultimately its seems your DAC is the most likely culprit.
A quick search pulls up many reports of this DAC board having audible clocking issues.
A couple of ways to relieve the snapping sounds could be to enable resampling in Moode's audio settings which can force the DAC to stick to a specific clock/sample rate. You could also try to increase mpd's buffer in case your network is problematic this is under [Configure] > [MPD] > [Audio Buffers], try doubling the value. Ultimately its seems your DAC is the most likely culprit.