I have got my 24x8 LCD from http://www.pjrc.com/store/mp3_display.html
It has backlight, serial interface (partially VT100 compatible), 4 fonts.
I don't know about winamp though - I used the LCD with free LCDStudio software http://www.lcdstudio.com
It has a special plugin for this display http://www.lcdstudio.com/e107/comment.php?22
I can take some pictures of the actual unit if needed.