Move Volume/Pause/Prev/Next to Now Playing

Since these controls (Volume, Prev, Pause, Next) are tied to anything that is currently playing anyway, I think it would be a good idea to move these controls to the "Now Playing" screen in order to save space in the UI. I don't think anyone needs to have access to these controls at all times while browsing through the Media Library etc.? And the "Now Playing" screen is accessible by pulling it up at any time anyway.

Originally I wanted to suggest this for QVGA devices only, since the space is very, very limited there, but it could be interesting for other devices as well.