 
 <prompt> Wetin be di second for di list of old versions of audio compression formats wey dem list? Given di last question, write something wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: No be only MP3 dey for town o, we get other open compression formats like Opus and Vorbis wey dey free and no get any known patent restrictions. Some of the new audio compression formats like AAC, WMA Pro and Vorbis dey free from some wahala wey dey inside MP3 format wey no fit solve by any MP3 encoder. 