Last time I found some free CDs at a Buddhist temple.
The CD has audio file of Om Mani Padme Hum mantra, which sounds very lovely.
Recently I edited the sound file and convert it to MP3 format.
Since the original audio has long intro and ending and the whole file is over 20 minutes long,
I trim it down to 2 MB only for easy sharing and loop playing.
you can just play it and loop it infinitely.
I find it very calming and beneficial.
You can play it as background music and share the file with everyone.
I make the file available for anybody to download for the benefit of all sentient beings. Sharing the mantra is beneficial for your practice and lets you accumulate merit. Boddhicitta.
Here's the download link:
Om Mani Padme Hum _/\_