Help Playing media stored on my phone via usb to my tv

[kl89]

ok so i have a samsung vibrant. i wanna play music and movie files from the phone via usb on my tv. the tv i have is a 46" sony bravia lcd hdtv, model # is kdl-46ex600. i had been able to play music on it from my phone, but now i cant. idk why.never had been able to play movies tho. i know there is a av cable available for this kind of thing but im interest in learning the usb method. help would be much appreciated. thank u in advance.