Help Posting .gypsy Files to Blogspot!

Does anyone know how to upload files onto blogspot? I have many .gypsy files that I want to share - but I can't figure out how to load anything except .jpgs :-( I read something about using a hosting site for the files, and then linking the file? How does that work? I really appreciate any help you have! Please leave a comment in "The Gypsy in Me" tab. Thank You!!