ZamZar is a useful online file type converter. It works with hundreds of file types, including most audio, video and graphics files. The free version is limited to two conversions per day, up to 150MB, but it can be very useful for solving compatibility issues between software. The drag and drop interface is really easy to use, and most conversions are processed very quickly. The site offers an unlimited premium version via a subscription model, although if you find you need to regularly convert certain file types, there are usually offline software-based solutions for this.
For advice with online or offline file type conversion or any other Learning Technology issues at GSA, visit us in the Learning Technology Office located in the library or contact us at LTHelp@gsa.ac.uk