Lectora course not playing some media files on Samsung Galaxy tablet

dlawrence Community Member Posts: 1
I have build a course that incorporates mp3 audio and mp4 video. When I preview the course on a scorm cloud testing site, all the media plays fines if I view the course on my PC. However, when I view the course on my Samsung Galaxy tablet, the sound and the videos don't play. What am I missing?

Do I need and plug-ins for the tablet?

Any comments or help is greatly appreciated.

Thank you in advance.

p.s. - I'm a graphic designer with limited experience in Lectora