I am using this player for my J1.5 site now. The popup can be manipulated from the back-end for size and shape with a little look at the coding. But I was not able to change the skin colour, which is black, but not unfashionably so.

The popup button issued with the player is ugly, but this can very easily be changed to something else.

Track manipulation is good enough. Its got the standard volume control and time bar.

In short, it works. I highly recommended it. Good work Daniel!