I've yet to find a water recording that can compete with the real thing.

Sometimes my masking efforts make my T worse. The trick is to find something else that does work. If white noise doesn't work try pink noise or brown noise.

Classical music is also good. Youtube is a great way to experiment with different sounds.

Crickets
http://www.youtube.com/watch?v=A9peZ5WOtL0&feature=related

Rainforest
http://www.youtube.com/watch?v=Yg3W11G4In0&feature=related

Pan Pipes
http://www.youtube.com/watch?v=e5WKgLTUNPg&feature=related

Ira Glass
http://www.youtube.com/watch?v=2oHX96eJ5GI

Water noises are about the only thing that mask my T, but I run pink or violet noise behind it instead of white. Oh, locusts also will mask it. I find I have to have a constant sound (constant trickling, constant rain, etc.) or I hear my T at every lull (as with ocean waves, most music that isn't steady, etc.)

For awhile I worried that listening to pink noise was making me wake up with that noise in my ears or brain, but that hasn't seemed to hold true all the time.

Amazon.com has several white noises you can listen to. You can sample them and if you find one that works you can purchase it for less than a buck and download it to your MP3 player. To find them go to Amazon.com and click MP3 downloads and do a search for "White Noise". It will bring up many pages of white noise. Good Luck.

I find water running, air conditioners, fans and other 'white noise' sounds to be particularly irritating. As I still have a lesser form of hyperacusis (it was very bad when it started), I think this is the reason.
Some music, however, is very soothing, such as - and I know this will sound strange - didgeridoos, tibetan bells and other low resonance instruments. Last week, I had a healing session with an Australian didgeridoo player who does 'sound' healing in the Aboriginal traditions. He was visiting L.A. from Australia. Although he played the instrument very close to me, it actually seemed to balance out the hearing/tinnitus/hyperacusis problems. The resonances that the instrument achieves seem to blend right in rather than aggravate my t and other hearing problems.
So, it is a matter of finding the right frequencies that mask the t but don't exacerbate it.