I've had success with these. I misspoke, they are just a minute long. https://www.demolandia.net/speaker-test/noise.html https://www.demolandia.net/speaker-test

I've had success with these. I misspoke, they are just a minute long. https://www.demolandia.net/speaker-test/noise.html https://www.demolandia.net/speaker-test/noise.html The white and pink noise loop seamlessly for me in Foobar2k, Plexamp, and Squeezebox