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How can i add a Soundcloud file to my lightbox?

You can include a Soundcloud file to the themes lightbox with prettyPhotos iframe mode.

You have to use a custom link for the lightbox in the photo posts details and add the iframe link from Soundcloud with the additional attributes for prettyPhoto

 

&iframe=true&width=50%&height=166

 

on the URL like for example this link

 

http://w.soundcloud.com/player/?url=http%3A%2F%2Fapi.soundcloud.com%2Ftracks%2F58258630&auto_play=false&show_artwork=true&color=ff7700&iframe=true&height=166&width=50%