I've come across an odd bug when casting to my Chromecast Audio. If I am listening to a playlist or full album and hit the previous or next buttons or even randomly select songs within the respective playlist or album all is well. However, if I am listening to a song in a particular album and (while it's playing) go to find another song in a different album and select it by tapping it, DSub will stop playing the current song, act as if it is going to play the newly selected song (says "Buffering") but never does. I'm using a Samsung S5 running Marshmallow, and I have replicated on my wife's LG G3 (also on Marshmallow). I've played with all of the Proxy, Gapless, Stream Original (originals are mostly FLAC with a handful of MP3s), and Cache While Casting setting to no avail.
Please let me know if a log or some other troubleshooting steps are needed.