This is a wrapper around Shay Green's wonderful and fantastic Game Music Emu library, enabling Spotify to play classical game music files, such as those from games on Nintendo, Genesis, PC Engine and other consoles.
Mac OS: Install GME.splugin into ~/Library/Application Support/Spotify/Plug-Ins/LocalFile/
Windows: Dunno. Something similar to the above, I guess.
GMEsplugin is written by Joachim Bengtsson.
Since GME is is LGPL, I don't have much choice other than to license GMEsplugin as LGPL as well.
2011-05-13: Project began