It's something that I wanted to have in amsynth since the very beginning, so I'm pleased to finally be able to show you a new skinned user interface that is nearing completion.
I hope you'll agree it's much more attractive than the currently released version:
If you're interested in playing with the new UI, grab the source code from SVN:
svn co https://amsynthe.svn.sourceforge.net/svnroot/amsynthe/branches/new-gui-1
It's not quite ready for release yet - it will only run if executed from the top-level directory of the source tree, because it looks for the 'amsynth-skin.zip' file in the current working directory.