The play buttons for the previews of sounds, loops and the music section do now work on the Apple iPhone and iPad products. We changed the player code for the listing and detail pages yesterday and will also add that play button to some of the widgets, so you can surf and listen via these devices.
As some of you know: the Webkit on iOS does not support flash. Our legacy players will continue to work with that technology, but if you are coming with a HTML5 capable browser, the player switches to the new technology automatically.
That also accounts for IE9, FireFox 4 and the Chrome browser on Android... much better support now!
We will continue to update the platform for better HTML5 conformity during the next few months.