Joomla how to add background video and music?

I have just starting making a webiste on Joomla and I have downloaded these two extentions to try and add a video in the backgorund and music playing.



For the background video:

http://ift.tt/15uFYo7



For the background music:

http://ift.tt/15uFVZy



I can get the video on my website but its not in the right position its over my content does anyone know how to put the video behind the content? And the music one I cant get to work at all I have uploaded it into the images folder and put in the audio file name and nothing. Anyone who uses Joomla got any ideas?



Thanks