If the product description gave you the false impression this was present, please let me know.
Could I please have either access to your acp or a copy of that theme to look over? I'll need to check the template bits as to why the hook is duplicating itself like that.
Media urls and integration with the Videos application are the only supported formats as noted in the product description. The media urls are what ever oEmbed sites that IPB4 currently supports. This should be a rough list of the latest sites.
return array(
'youtube.com' => 'https://www.youtube.com/oembed',
'm.youtube.com' => 'https://www.youtube.com/oembed',
'youtu.be' => 'https://www.youtube.com/oembed',
'flickr.com' => 'http://www.flickr.com/services/oembed/',
'flic.kr' => 'http://www.flickr.com/services/oembed/',
'hulu.com' => 'http://www.hulu.com/api/oembed.json',
'vimeo.com' => 'http://vimeo.com/api/oembed.json',
'collegehumor.com' => 'http://www.collegehumor.com/oembed.json',
'twitter.com' => 'https://api.twitter.com/1/statuses/oembed.json',
'instagr.am' => 'http://api.instagram.com/oembed',
'instagram.com' => 'http://api.instagram.com/oembed',
'soundcloud.com' => 'http://soundcloud.com/oembed',
'open.spotify.com' => 'https://embed.spotify.com/oembed/',
'play.spotify.com' => 'https://embed.spotify.com/oembed/',
'ted.com' => 'http://www.ted.com/talks/oembed.json',
'vine.co' => 'https://vine.co/oembed.json',
'facebook.com' => 'https://www.facebook.com/plugins/post/oembed.json',
'gfycat.com' => 'https://api.gfycat.com/v1/oembed',