How can I watch videos on an Android tablet?

[xx30secstomarsxx]

My mom bought an Asus android tablet last year and has had problems with it ever since. There are times she opens emails and when clicks certain links that have videos she gets that sad looking lego guy saying she needs flash player. I know android took flash player out of the market but there has to be someway to fix this, maybe there's not. She's trying to watch an "elf yourself' video I made her but she's not able to watch it through email or through facebook. If anybody can help I would really appreciate it.
So when opening an email, will it automatically play from mx or do you have to go into the app to play videos?

[Ricardo]

Have you try the "MX Video Player", it's works for me. I have my Android v.4 Tablet, installed this app. It can run many video format, no problem at all, you should try this.

[Tim]

"MX player" is the best player you can get for Android, it supports EVERY kind of format and just always does the job.