The song "Jane Ja Jane Ja" (also known as "Jaane Ja Jaane Ja") is from the movie Yeh Kaisa Karz
Music Stores: iTunes, Google Play Music, and similar stores allow you to purchase and download individual tracks.
The Evolution of Music Consumption: A Case Study of "Yeh Kaisa Karz Jane Ja Jane Ja" Mp3 Song Download
The Legacy of Karz
For many, this song represents a time of cassette tapes, walkmans, and FM radio. Naturally, the urge to download the raw MP3 to preserve that vintage audio quality is strong.
Conclusion
Alternative Methods: If you're unable to find the song on music platforms, you can try the following alternatives:
YouTube: View the full Yeh Kaisa Karz Video Songs Playlist to see the choreography and film clips.