If playing on a PC connected to a home theater, use advanced players like VLC or Media Player Classic. Ensure that your audio output settings are set to "Audio Passthrough" or "HDMI output" so your external receiver does the heavy lifting of decoding the 5.1 signal.

Downloading Tamil Bluray video songs 5.1 is relatively straightforward. Here are the steps:

The search for Tamil Blu-ray video songs with 5.1 surround sound

What (soundbar, receiver, headphones) are you using? g., 90s Rahman, current Anirudh)?