I read the faq and I saw that the app will not put audio files in any order but alphabeticaly! They recommended to use a prefix like 01,02, etc and the file would fall in order. That did not work for me. I found out, while I added the prefix 01,02,03 etc. the program put things in a different order! I figured this out. The date for the last modified ruled the order of the files. I had to open up Audacity and import each mp3 and save it it again and then the modify was in chronological order! I modified each mp3 and saved it over the last file. And this worked. I hope this helps someone!