Website shows up on samsung andtoid tablet but site's vidio/audio files don't run

General information for the website: Speechrxx helps users with speech exercises with video and audio asssisted speech exercise Kind of development: Customization of existing website Description of every page/module: see Speechrxx site; page for registration multiple pages with video/audio files that include audio of speech that matches video with audio Description of requirements/features: website shows up on samsung andtoid tablet but site's vidio/audio files don't run Extra services needed: Customization Extra notes: website shows up on samsung andtoid tablet but site's vidio/audio files don't run; Website Speechrxx.com shows up on my samsung android tablet but the video/audio files don't open and run. I own Speechrxx.om: I need someone who can fix the problem I described. Rex