Kerry

I found the solution.

1) Go to /wp-content/plugins/mp3-jplayer/js
2) open mp3-jplayer.js
3) go to around line 173 and change the location, status, scrollbars, resizable to either 0 for NO or 1 for YES.
4) line 174, change popup_width & open_at_height to your preferred width and height numbers , ex) newwindow.resizeTo( 300, 110 );