While there is no single "official paper" for downloading video songs due to copyright protections, you can access the Nanban (2012)
Dailymotion: Several high-definition uploads, such as "Asku Laska", are available for streaming.
Where to Download Nanban Bluray 1080p Video Songs?
Heartile Battery: A popular track sung by Hemachandra and Mukesh Mohamed.
Nalla Nanban – A heart-touching tribute to true friendship. Where to Watch and Download Legally
Asku Laska – A romantic masterpiece by Madhan Karky featuring 16 different languages.
"Nalla Nanban": A semi-classical song that closes the film on a poignant note regarding true friendship. 🎥 Technical Highlights