The safest and most respectful way to obtain the anthem is through official government portals. This ensures you are using the correct 52-second rendition.
: The most reliable source for the official full version (~52 seconds) and the short version (~20 seconds) in MP3 format.
: This is the primary source for the official Full Version (approx. 52 seconds) and the Short Version (approx. 20 seconds) in MP3 format.
The by the Government of India provides the official MP3 files for free:
Your PA system may have high bass settings. Convert the MP3 to a WAV file (uncompressed) using free software like Audacity, or use an MP3 with a bitrate of 320kbps for large speakers.