I've always been under the impression that the streamers you're talking about were just using YouTube playlists (or Winamp or Foobar, like you mentioned).
Doing some quick googling, there are apparently mobile apps for both Foobar and Winamp, but I'm not sure if the mobile versions have SPC support.
I'd say your safest bet would be to just use YouTube. There are a lot of YouTube channels and
playlists that are dedicated to archiving ports from SMWC, so you should be able to find most of the really good ports that way.
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