Follow New post Record history in a MP3 file? tst-telecom December 14, 2013 11:56 How can I record my recents contacts in a MP3 file format at Zello@Work ? 2 comments Date Votes Shaima nosy March 21, 2016 16:42 where is the answer? T0ASTERvan October 05, 2016 19:21 Although I'm a bit late on this reply and I've just downloaded Zello mysel, I was searching for the same type of question. However and according to Zello's support link, it states that if one was using the full version of the free version of Zello, they would be given the opportunity to record and save audio files in a .MP3 format. Source: https://zellowork.com/recording Please sign in to leave a comment.