Uninstall w/o backup

[sinsemilla]

Hi,
I just tried to activate/configure a crossfade plug-in which caused the system to freeze whenever I tried to run Winamp after that.
So I uninstalled Winamp, confident that I had a backup copy of version 5.53 Pro which I purchased a couple months ago.
To my chagrin I didn't have a backup.
Have you ever heard of such a thing? Not keeping the install-file for backup? Smooth move, X-lax!
So, what do I do now? Is there hope yet?