One prog for converting audio file types

I’m looking for a (freeware) easy-to-use program that can convert different audio file types from one to another, wav to mp3, mp3 to wma, etc.

Which program can do this?

Used search but didn’t found what I looked for.

BeSweet, not that simple but powerful.

I found BeSweet 1.5 but I can’t find the GUI anywhere.

Any idea where I can find it?

Never mind, found it.