* IMAGENAME is the relative path to the image from the foobar directory
(NOTE: If profile support is off then the standard foobar installation folder can be used. However if User Profile Support is Enabled this directory is profile specific and is thus located in:
C:\Documents and Settings\USERNAME\Application Data\foobar2000\YOUR IMAGES DIRECTORY\
要把圖片丟到上述資料夾裡面
而且只能支援PNG檔...
研究了好久
