In the past I chose to use drop.io for hosting files (other than photos) which are associated with this blog. I just learned that drop.io is closing and all files will be deleted on December 15th. I just found out about this as I went there to replace a file with a newer version. The drop.io blog post claims that notification e-mails will be sent, but I didn't receive any e-mail despite having an e-mail address associated with my account.
I'm now hosting my files via Dropbox. I think I updated all the links. If you find a broken link, leave a blog comment here or on that particular article.