If you find the technical flaws of the Black Tyros version distracting, consider these related alternatives: Black Tyros 32 bit GM Soundfont - PG Music Forums
Finding an official "free" version can be difficult because the primary developers often sell it as a commercial product. However, community-driven archives and alternative versions exist: Internet Archive : Check the 500 SoundFonts Collection Black Tyros Gm Soundfont Free Download