You didn't mention shuffling in any of your previous posts, just that you expected Poweramp to play the entire album from beginning to end or repeat. The Shuffle icon in the list screen will shuffle the current category (which could be an album, folder, playlist, etc depending on what you are currently viewing) and then it will move on to the next similar category (i.e. next album next folder, etc). However from the above it look like you have pressed the Play icon (or tapped on a song