If I downloaded songs from gaana.com, it goes to SD card\Android\data\com.gaana\files\.gaana folder without any extension. When I rename the file with .mp3 extension, I am able to play the song in windows media player.
Everything is fine until here. Now when I use softwares like Mp3Tag, EasyTAG and few others to update the album/track/artist and other metadata tag info, it corrupts the mp3 file and it does not play in windows media player.
Can someone tell me the correct way of tagging downloaded mp3 files from gaana.com?
Your file is not a MP3 - according to http://mediaarea.net/de/MediaInfo this song is a MPEG-4 / AAC. You can find more infos about this format in http://en.wikipedia.org/wiki/Advanced_Audio_Coding
If you rename it to *.aac and then tag your album/track/artist and other metadata info with Mp3tag your song get it correctly and play well.