Hi, new guy here as well, but I am experiencing the same issue with UAPP. Tried a factory reset and tried re-flashing the firmware again (I'm using the latest release by lurker). The problem occurs when I select a new song to play for example when I first start UAPP with nothing playing and I select a song with a drum hit or a chord strum that starts the song, it would skip it and play the rest of the song perfectly. However if I play another song before the aforementioned track and the let the player transition to it, the drum hit/chord strum can be heard (hope this makes sense). So I am at a lost here, I love the DX200 and it's versatility but this is driving me nuts.