Adding JW player to a product page

Hi, New to all this but I have a theme I have modified a lot, I am on my last tweeks but getting stuck. I have the theme going good, products and everything work good, I am just trying to add a video to the product page. I can make a video page on it's own, plays fine. I have added the field to the product set up page, so now you can upload the video to the product page, but it does not show up when the page is viewed. Maybe my css from my theme is blocking it? Any help or a point in the right direction would be awesome, sorry if this is not posted in the right place. Cheers-