See Straight Through Winamp3

I've been using Winamp3 for quite a while now as a natural progression from version 2. For those who don't know (anyone?) Winamp is one of the most widely used programs used for playing MP3 files.

Anyway, one of the cool features of v3 is the ability to change the opacity of the windows, which is especially useful if you select the "always on top" mode and you want to be able to see anything underneath. While this is easy to do with regular Winamp3 by just clicking on the little '+' symbol, it is less obvious when using a skin that doesn't have the '+' to click on (a skin makes the Winamp program look different; go check out the skins page if you're confused).

Up until now I figured you couldn't change opacity if the skin didn't support the option, but finally I've found out how! Just hold the Ctrl key while you right click on Winamp and the Scale / Opacity menu pops up.