Audio not playing

Hi everyone
I’m having trouble playing audio files. I’ve recently added the SC player which works fine on certain older files but not on others including recently uploaded files. The audio also does not play with the standard WordPress audio player.

I’ve made a test page here to demonstrate:
https://www.mattcowe.com/wordpress/?page_id=727″

I’m also using another MP3 player which works fine here:
https://www.mattcowe.com/wordpress/?page_id=35

I recently added “Easy Digital Downloads” Plug In, The seems to have started since then, although I’m not sure of that. I’ve disabled all unused plugins.
Any ideas anyone?

I’m using a mac os10.9.1 with Safari

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