When playing a video in a playlist the volume is not normalized and in my case is turned way down. At the start I thought there was no audio for the videos untill I noticed that the issue was the volume being turned down. This happens for all songs that have/are video.
I suggest you stop forcing your "choices" on people and offer a way to be in an audio-only mode. The videos can be annoying, useless and worst of all drain my battery. If any of you usability engineers really think people are watching the client while listening to music then you better get your statistics right. You could at least not play/stop playing the video if the client doesnt have focus or loses focus. I personally consider this a degradation of user experience.