Earlier quoted context omitted.
Just because the whole is more or less abandoned (although I still use winamp, currently running a build from Dec 21, 2022), doesn't mean the licensed parts are. If the rights holders of the licensed bits haven't abandoned them, then it's not really fair to distribute them without their consent.
This. I cannot believe people are telling me to just open everything. It's nuts. Imagine if someone found your personal code and just decided to open it without your permission or knowledge!
Also, we're not talking about personal code either, but something that is arguably a product humanity, or a part thereof, would want to preserve for posterity.
Lastly, no one is telling you to open anything. I am saying that if someone decides something you have created need to be preserved, they should go ahead. You can protest, you can sue, the point is it shouldn't stop anyone from trying. Which doesn't apply to this case, as the owner of Winamp actually wanted to make it open source.