loading mp3 files

hello 

i have windows 10 and audacity 2.2.2 connected to my laptop usb port 
when i save and convert to mp3 with lame3.99.3 i get an mp3file but 
when i play the mp3 file there is no sound 
what s the prblem issue

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*********** ASKING FOR HELP *************

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* What operating system you are using (for example, Windows XP or Mac OS X 10.5.1)

* Exactly what three digit version number of Audacity you are using (Help > About
   Audacity, or Audacity >  About Audacity on a Mac computer)

* If this is a recording problem, what equipment you are recording with, and how is it
   connected to the computer?

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