As far as I know the best is aodsf. You can get 0.09 here:
http://foobar2000.xrea.jp/up/files/up1111.zip
Put in_aodsfu.dll and aodsf.bin in your Winamp plugins directory (assuming you have Winamp 5.x, for 2.x you should use in_aodsf.dll and aodsf.bin which has no Unicode support).
As with other XSF files, you need both the minidsf and dsflib files in the same directory.