Look at my commented skin in the koolexchange.

You create your graphics and create a directory under /bin/mediaplayer and put the graphics there. Then you create a LOAD.AS, NAME.TXT, INFO.TXT files

Look in C:\Program Files\KoolMoves\Examples\Components\Flash 8\API\mediaPlayer API.txt for info on what goes into LOAD.AS

In Info.txt you have that set parameters for the skin like Minimum Width and Maximum Width

minw
195
maxw
195
minh
325
maxh
325
cshadow
1
audvid
2
fd
1
pl
1
colors
0
drag
0
argb
1


And Name.txt is just the name displayed in the GUI