My Mac thinks that the music is an Excel / Bina file. How do I play it?

It is common for Apple Mac users to encounter this bug, due to long computer file names. Once the MP3 is downloaded, your computer abbreviates the filename and cuts off the ".mp3" filename extension. This leaves your computer incapable of recognizing the file and finding an appropriate application to run it, and the computer assumes it is an Excel or Bina file. Just rename the track by adding the extension ".mp3".