I’ve been using WinAmp since sometime in 1998 or 1999. Very sad to see it go.
I’d vote it as probably the best piece of software ever written as it is completely stable, does exactly what it is supposed to do, is very customizable and uses few resources.
Back in the late ‘90s it was the only player that could decode an MP3 without issues on low-end hardware.
No matter that it won’t be developed anymore; I will keep using it until (as will inevitably occur) user-installed programs are made illegal, and even then I will break the law and use it anyway.
AOL bought WinAmp and pretty much ruined what could have been but it is still perfectly suited for what it does and as long as it works I will keep using it.