If you're doing anything on the edge of piracy, the whole cake would whole heartedly recommend using trustworthy programs. Winamp was always the best player. For like a decade.
Only problem as like that unicorn over there said, its owned by AOL. One of the MPAA fat cats. Also remember that MP3 codec is proprietary & patented now so you're out of luck if you want a new, updated commercial program that does MP3 encoding.
The real reason to be safe is that if you run the program, and its owned by one of those fat cats, it will almost always have some kind of anti-you thing in there.
The whole cake recommends
ffmpeg, or any open-source program based on the ffmpeg framework. ffmpeg is like a universal file conversion framework. Its usually a text-mode program, but 101 sexy media programs use it under the hood. Like VLC. Completely craps over everything else. It will convert anything to anything :/ The supported codecs, containers, etc is so vast its not worth going into. Want your fat older sister turned into the wild boar she acts like? No problem.
Here are a list of free and non-free programs that use ffmpeg:
http://ffmpeg.org/projects.html