I have had to use an alpha fade from state to state in order to control the erratic nature of the element loading in my apoplication. I find that when you fade the OSMF player you see layers of images and video you presumed removed. How can you clear the OSFM player of all previous content. This continuous media stacking is no fun.
I'd really like to get some sample code that shows the problem you're experiencing, as I suspect you're doing something that we haven't tried before. Can you post a running sample (or email it to me, briggs at adobe dot com)? Thanks!
Add MediaPlayerSprite to the display list
Play a SerialElement comprising of a VideoElement and then an AudioElement
Video is left in display list whilst AudioElement is playing
MediaPlayerSprite or it's MediaPlayer instance should be clearing this out