The classic Winamp 5.66 has memory leaks on modern OS. The is a modern fork that handles large DSD metadata (album art, tags) much better and has native support for high-res plugins.
While some users report that certain versions of the plugin can be buggy or unstable during conversion, it remains the primary method for bringing SACD-grade audio to the classic Winamp interface. Winamp ASIO plugin download | SourceForge.net winamp dsd plugin