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Actually, Winamp is not going Open Source
(programming.dev)
This is a most excellent place for technology news and articles.
Same reason for switching every other app to 64-bit I suppose; logical evolution.
I absolutely don't need to though. Especially for something light weight like a music player.
For me it’s more future-proofing: there’s a chance 32-bit support may be dropped by either the Foobar dev or windows itself at some point.