Sounds like you want to develop for wp7? -> Have a look at the free petzold book for windows phone 7
http://www.charlespetzold.com/phone/[
^](but most applies to silverlight also).
Otherwise google.
I have developed a wp7 app which can show pictures, texts, play video and sound. But I don't see a reason just to give you my code (which cost me a lot of work). If you don't understand this - read this forums rules.
Don't take me wrong I'll try to help you with a specific problem and I'd love to share my code with you, but "I need code" is not acceptable.