Many Bollywood films released on Blu-Ray contain a Dolby Digital 5.1 or DTS 5.1 audio track. Ripping your own disc to MKV (using tools like MakeMKV) is legal for personal backup.
Companies like T-Series and Sony Music India released "Music DVD" albums in the late 2000s/early 2010s (e.g., Rock On!!, Dev.D). You can find these used on Amazon or eBay. dolby digital ac3 5.1 audio hindi songs download
Sometimes you just want the audio file for a playlist, not a music video. Many Bollywood films released on Blu-Ray contain a