I got this from Savagenews and they are reporting that NullSoft have released an update of their WinAmp 2.78 installs to version 2.78c (compiled on 9th of December). Unfortunately there are no release notes given, but you can grab WinAmp 2.78c below...

WinAmp 2.78c Standard (1.1 MB)

WinAmp 2.78c Lite (502Kb)

WinAmp 2.78c Full 1.8 MB