Clik on the browser icon in apps on android home page , then type in the site where the file is, bring up the page with file on it , click on the file you will see the dpwnward pointing arrow top left of your screen indicating it is downloaded .
Open xbmx , system , addons , install from zip , on the right hand side click on external storage then on downloads , scroll down to the named file , click on it , top left of scree a box will appear , add on enabled.
Go back to xbmc home page clik , movie . Live sport or whatever ia applicable to the file, click add ons , scroll down to find the file icon and open it.