Dear all, pls help?adult site skin doesn't show videos as a gallery in WordPress!

hi everybody, after a lot of search I found adultsite skins to start a tube site, only problem im encountering now is that after embedding the video codes in my post and posting i'm seeing only the titles of my posts as a gallery, but not the VIDEOS as a gallery as shown in adultskin sites DEMO.
My intention is to display the videos as a 3 column gallery right in the homepage of my website. I'll be very thankful for troubleshooting or suggesting a better way!

Not sure this is the good section of the forum for this.

some themes require the thumbnails to be in media uploads and check to see if you even have a thumbnail for each video. have a look at one of your posts, is the thumbnail showing as featured image ?

hi guvenor, thnks for the suggestion, in media I could see a gallery but it says that ffmpeg is not in bla/bla/bin folder in WordPress server to make a gallery. anyways i think using galleries frm my sponsors is the best way as making them manually for many sites is a pain in the butt! and guvenor do let me know if u know about any free WP tube themes or the sources to get one! Once again thanks for your prompt response!