This little Winamp plugin will make Winamp stop whenever you lock your screen or return to the Welcome Screen using Fast User Switching, resuming play when you return to your session.
In addition, it can behave differently for streaming and non-streaming media; for example, streams (like web radio) can be stopped and restarted while "normal" media is paused and resumed. All this is subject to your configuration choices, of course.
Improvements over other such plugins: More functionality, configuration dialog, small DLL size, no crashing.
Note: this is for XP or higher only and the plugin will not load into Winamp if run on anything below.
This works well and the choice of what to do with the different actions was nice.