I am a newbie to Linux and Xterm, I understand how to run mplayer in Xterm, but have a few questions.

Do I need to be root to run a video off my memory card? If so, does 'sudo su' solve that issue.

I have a video in a folder 'Videos' on my memory card. Do I need to have mplayer installed somewhere specific to access it, like I have seen in this forum, about moving it to the /usr/bin? So to run the video off the memory card, what would be the path I need for mplayer to access it?

Thanks