Just for Windows? Lame.
Here's hope that they'll pick things up again.
I'm sure there's some here that are very confused by this though, so here's the context:
https://slashdot.org/story/01/10/23/1816257/apple-releases-i...
Edit: Got it working with running wine in 32-bit:
WINEARCH=win32 WINEPREFIX=~/win32 wine winamp58_3660_beta_full_en-us.exe