Make a File Directory

I need to make a file directory page that items can be downloaded from. This would be a listing of products that the company offers. There would be a Hi-res Photo a Lo-Res Photo, and Misc content such as video or instructions. All of which would be available for download. So, I would make the names of the files to match first “x” of characters so that the files associated with that product would be put into the same place. Is there a plugin that does this? Or do I need to do this using taxonomy? Is there a way to set it up where I can upload the files via ftp instead of through wordpress and the php pick up
all files within a certain folder.