This extracted track is already synced to its source. However, if you want to attach it to a different video file (e.g., a longer Director's Cut), you may need to use Audacity to adjust the delay (usually by + or - 500ms).
To obtain the high-quality, 5.1 channel Hindi audio track legally, you should look for specific editions of the film: Kung Fu Hustle Hindi Audio Track Download
Searching for often leads users to torrent websites and unverified streaming portals. Here are the risks and realities: This extracted track is already synced to its source
If "Kung Fu Hustle" isn't available with a Hindi audio track through official means, you might have to consider other titles or wait for a release that includes the desired audio track. a longer Director's Cut)