Dropbox has quickly proven itself to be one of those "must have" applications. Its seamless interface make syncing files between your multiple computers are breeze. While your primary reasons for using Dropbox may be the ones advertised on the site, with some third party hacks and settings tweaks there are some truly awesome uses for your Dropbox account.
DropTunes: Playing audio files from your Dropbox account is already something that can be done. However, DropTunes takes the pain out of clicking each individual file and creates playlists from the music folders that you store in your Dropbox. Additionally, DropTunes give you a nice user interface to adjust volume, pause, and even click forward and back tracks.
Host A Website: One of the more clever ways to use Dropbox is as a free hosting service. All you have to do is copy an HTML file into the Public folder of your Dropbox. Once you do this, right click with the mouse on the file and select "Copy Public Link." Now you can paste the web address into the browser and you now have a live website hosted for free. This is a great way to test simple sites before investing in a real host. And if this simple Dropbox site is enough, then you can simply purchase a domain name and forward the address to the link for easier to remember URLs.
DROPitTOme: If you ever need to receive file that are too large to email, then DROPitTOme is a perfect solution for you. All you need to do is give somebody the custom URL and the password encryption (if you choose) and they will be able to upload large files directly to your Dropbox. No more having to deal with email attachment limits. You know have your own private server that people can upload important files to.
Other great Dropbox related links: