i have these GENH,VPK and MIB files i want to open and convert to mp3 but i dont know how to

Try changing the extension to .rar. Beyond that, I wouldn't know. And don't make these kinds of threads in this section. They don't belong here.

Indeed, this should go in the discussion section but I'll answer your question. Those are game stream formats (actually GENH is a containter, not a format) and you need vgmstream, a decoder plugin for numerous types of streams. Get foobar2000 and vgmstream. Or Winamp and vgmstream. The better choice with conversion in mind would be foobar. I can teach you how if you need help.