More Help please.

I have played some music on my phone but can not work out how to turn it off.   To resolve this ive moved the music icon into the widget thing. Is that how its done?

Also I keep getting a box up on my screen saying    NO EVENT ? i have no idea what the hell it is or how to get rid of it. So again ive dumped it into the widget thing.

I have had a Samsung before and thought that had some strange things going on with it but this one..... Its the Worst phone ive ever had the miss fortune to own.  Its only saving grace is that I got a Free WII with it.