Many times, LoudTronix requires system maintenance or upgrades, which will cause LoudTronix not working, and this is a common problem with all online YouTube downloaders. If you are unfortunate to encounter "This video may be unavailable or not public. Please check the video link.", "An error occurred! Please try again later." and other error messages, a free LoudTronix YouTube downloader alternative is required. WonderFox Free HD Video Converter Factory is a popular YouTube video and music downloader, in addition, as a free audio and video converter, it can also convert YouTube to MP3, MP4 and other audio & video formats. Now, free downloadfree download this LoudTronix MP3 converter alternative on your computer and then move to the tutorial of how to use it.