Downloading the file is only half the battle. Playing 5.1 audio requires the right software and hardware.
Alternatively, use the or Gaana paid apps. Both offer "Hi-Fi" trials that stream at 320kbps (stereo, not 5.1), but they have a vast library. 5.1 Surround Sound Hindi Mp3 Songs Free Download
If you surrender the need for an offline MP3 file and accept streaming, here is how to get the "free 5.1 Hindi song" experience: Downloading the file is only half the battle