This one is primarily for my benefit. In my line of work, I spend a lot of time converting proprietary file formats to other, usually open, formats. This I try to do without actually having to buy any software. Why should I buy Adobe products when all I want are the images from a silly Acrobat file?
I spend a lot of time searching for high quality open source tools do what I want. Just recently my nephew wanted some help to–groan–embed a sound in his web page. The proprietary method he chose wasn’t working in Firefox. To fix this I recommended he convert the file to a Flash object and then use the the satay method to put it in the page markup. To make this work, I had to convert from MP3 to WAV and then finally to SWF. To do the last step, I found a nifty suite of open source command-line tools for working with Flash and Shockwave. Phew! Problem solved.