Sometimes, to combat my tinnitus, I just listen to white noise for background. I have found an intriguing substitute with LIDO (Listening to the Deep Ocean environment). LIDO is a website that presents realtime and archived seafloor acoustic observations around the globe in a scientific effort to evaluate bioacoustic factors and identify geo-hazards that affect marine life and the ocean environment. And you can listen in "low quality" or "high quality"!

Check out the site: http://listentothedeep.com/

Here's where I learned about LIDO and heard some examples: http://www.theworld.org/2011/12/listening-to-the-deep-ocean/