Audio test

Expected result

• the hashes in each set should be the same
• the hashes should vary between the sets
• the "empty" hash should be 95476ffd46d1cd34fe8de83585c325df2b06019c852a5f6445200f57bc954a1b
• hitting the refresh button should not change the values
• reloading the page should change the values (depending on CanvasBlocker settings)

Tests