You can set the opacity of an object via the alpha controls. As far as
making it look like glass, that will require some hilights and things that
would be better suited to Photoshop.
You must make your object into a symbol first, then in the parameters dialog
box, find the "color" drop down box and choose alpha, then make your
adjustments. You can also set the alpha via actionscript.
setProperty("Face", color, #FF0000);
_root.audio = "uh oh!";