YouTube now supports on select content. Search for "Tamil song 5.1 audio test" or official movie tracks. Use a safe, ad-free YouTube downloader (like yt-dlp) to grab the video+audio stream. Warning: Downloading copyrighted content from YouTube for redistribution is illegal; personal use occupies a gray area.
Why 5.1? Because a 5.1 audio track (comprising Left, Right, Center, Surround Left, Surround Right, and a Subwoofer for Low-Frequency Effects) replicates a theater experience in your living room. Imagine listening to "Why This Kolaveri Di" where the percussive sighs move around you, or watching "Naatu Naatu" (Telugu/Tamil dubbed) with the beats shaking your sofa. That is the power of 5.1. Tamil Video Songs Free Download High Quality 5.1
Use free downloads to test your system with the top 10 songs listed above. Then, support the artists by purchasing the official video song from iTunes or Google TV. That way, Kollywood keeps producing the 5.1 magic you love. YouTube now supports on select content