With 1.0.1 #93 build, MediaPlayer.bufferProgressTime attribute is not updated when progressive downloading. I tried both FXM and WMV.... same issue. So UI control for buffer position can't be enabled.

Please try this:
http://fxsqe.sfbay.sun.com/fx1.0.1/CutePlayer2/FullScreenEnabled/CutePlayer2.jnlp

- Open the right tab by moving the mouse to the far end of the window frame.
- Type in "http://fxsqe.sfbay.sun.com/resources/media/mixed/LewisClark_HiDef.wmv" into the Single Media URI textfield.
- The following was printed.
current/buffer 0.0 / 213.0 - media dur: 213.0


In CutePlayer.fx, I have

var dummy: Duration = bind myPlayer.bufferProgressTime on replace {
        println("current/buffer {myPlayer.currentTime.toSeconds()} / {dummy.toSeconds()} - media dur: {myPlayer.media.duration.toSeconds()}");
    }

So when the progressive downloading is happening, I should see continuous printings with new bufferProgressTime. This is not happening with #93.