The audio support in WebKit allows you to specify "looping" when an audio clip is played. Unfortunately, the looping is not seamless. There is a sub-second, but very noticeable amount of silence between when the end of the clip is reached, and when the start of the clip starts playing again. Here's a sample you can run from the Develop/Show Snippet Editor in Safari: <audio src="http://media.freesound.org/data/0/sounds/319__Anton__Osc2_Puls_25PW_220.wav" autoplay="true" loop="true"> That sound clip is a simple stable sound which loops fine in Ableton Live (music product application). I can set it to loop and it'll play that horrifying tone for as long as I want with no breaks. When played with the <audio> element, a noticeable delay is heard when looping. That sound clip is available from the following web site: http://www.freesound.org/samplesViewSingle.php?id=319
*** This bug has been marked as a duplicate of bug 230553 ***