I tried hacking the dll, and while I was able to expand the avs when docked in the avs editor window to fill the window, I could not get rid of the editor window title.. no matter what parameters I tried on it.. I got really frustrated, and said **** it.. I would just use AVS only in overlay mode.
Fast forward to today, I was looking back into getting my program going again.. and I thought, why not just crop the avs drawregion? After a little api hunting, and offset tweaking.. I ended up with functional avs border removal code
For the sample.. just open winamp, and have the avs window running.. enter in your settings, and [click]