MP4 to MP3 Converter is fine when it works; that just doesn't happen nearly as often as you'd like. The program falls victim to random crashes more often than it actually converts your files to a new format. That, the limited file support, and the frequent add-ons during the install make this program a tough sell.
This program takes MP4 video files and turns them into listenable MP3 audio files. That is, when it works. The program crashed more than half of the times we tested it, usually any time we tried to use a file that was more than one minute in length -- which are most of the files you'll use with this program, since it's a great way to turn music videos into audio files. It was even more annoying that the program didn't give any status updates as it was working its magic, so we never knew if it was going to crash. The program, itself, is just a basic menu that lets you put a file in and then determine where you want the eventual output file to live. You can't choose any format other than MP3 for output, and you can't send files that aren't MP4 at the program. When you're installing MP4 to MP3 Converter, it will try to get you to install four other programs that could take over your browser and search.
That doesn't help a program that was already not doing itself any favors in the performance category. Even though it's a fine converter, too many other programs can do everything it does and more. They all do it without the frequent crashes, as well.