Convert any media file format (Documents, Images, Audio, Video & Archives) without buying or installing anything on your PC. On the site you can change WAV to MP3, JPEG to TIFF, DOC to html , AVI to MP4, and most surprisingly, you can also make mathematical conversions in units, plus plenty more.
Basically you chose the file and then send you link to where you can upload it in it's new format. Pretty cool but I don't know how the media companies will handle it. Anyhow check it out here