broken file

I have a 15 minute sound recording (an interview) which I recorded onto Audacity and then saved as a wav file. I do this many times with no problem. A recent interview saved as numbered short files as B0004 through to 25. Why has this happended and how can I overcome the problem other than by playing each piece onto a seperate PC and joining them altogether ?

I’m guessing that (tell me when I’m wrong):

  • You are using Windows
  • Your computer hides the file extensions.
  • The “short files” are “b0004” through to 25 (lower case “b”).
  • The files are in a in a sub-folder of a folder in a folder that ends with “_data”.
  • You are not looking at an “exported file” but are looking at the data files that are in the Audacity Project folder.