Play music app doesn't find transferred mp3 file in library

I transferred an mp3 file from my PC using SHAREit app to my Android phone. It stored the received file it's own directory (SD1\Android\data\com.google...\files\SHAREit\audio\ on SD card. However I copied that file to another but already existing directory on SD card. Later I removed the file from the SHAREit path. Now I can play this mp3 by directly going to the current directory and tapping on the file name. But this mp3 can not be seen or played by "Play Music" app. Can you help me? Thanking you Shashidhar