Made by MrPropre back in 2005, also as a resource on this site.
I went ahead and updated the sounds with Sonic's voice so he talks now with some of the original sounds in the older version too.
12 new stages include Final Destination 2, Mario, Michael Jackson's Club, Windy Valley, Marble Zone 2, Launch Base Zone 2, Midgar, Flat Zone, Pokemon Stadium 2, Don Vito's House, Battlefield 2, and Great Fox.
All stages have preview pics to them so you'd have an idea how the stage looks ingame...