Whether you want to convert AUD files to MP3 or convert between any other audio or video formats, WonderFox Free HD Video Converter Factory will help you achieve your conversion in an effortless way. It's a powerful file converter for Windows, totally free of charge, ads and file size limitations. Meanwhile, it renders the fastest conversion speed and best output qualities. As a multifunctional program, it offers other useful tools including video downloader and video editor. A wide selection of video/audio parameter settings options are also offered.