Hi! I love Cymbal and really can't wait for more of my friends to get on it. I'm finding that often, the playback tracking bar doesn't move -- it will get stuck at either the beginning or end of a song. When it does, the playback timer stalls as well. I can still manually tap-and-drag the little purple dot to move to a different part of the song. I find that the tracking bar will work correctly for one song, and then get stuck on all subsequent plays. I'm using a Samsung Galaxy Note 4, running Android M. Thanks for the help, y'all. I'm hoping for the best for Cymbal :)