Unfortunately, Classic Payne has been cancelled. Check the news section for the full story..
These are the models left over from the previous beta version of Classic Payne. They are not in a playable .mp2m file, but rather a data folder containing player models. You can use the models in game by placing the data folder inside the Max Payne 2 directory. This beta is not supported! No help will be given, but a new version of of the mod is now in the works so stick around for that.