Some MP3 download sites use alphanumeric strings to catalog their library. If you have the name of the website where you saw this, I can help you navigate its search function.
It could be a unique track ID from a "Smooth Jazz" or "Smooth Radio" playlist or a streaming metadata tag.
Knowing the artist or the source site would help me track down the exact MP3 file for you.
This code might be the tail end of a URL for services like MediaFire, Mega, or Zippyshare. If you found this code on a forum or blog, try appending it to the service's base URL.