When i watch video on my iPhone 3g, it plays videos but for 3 secs and then goes back to the page where the video is. why that happens? I can't watch the entire video!! What should I do?

I have been getting sick of YouTube and I decided to split my youtube channel into 4 other channels. Now I am enjoying making these youtube channels. But I can't understand the customized thumbnails, which bothers me a lot!!!
On my old channel, I had customized thumbnails. But on my new youtube channels, I dont have them. I emailed youtube to ask why I just get jibber jabber that I cant understand back!
What can i do now?

I have a iPhone and can't download the songs straight to my phone.

I am going to make a music video about an element on the periodic table on a video camera but don't know how to make it come together. we need a video editing program to cut and create a music video.No seperate audio.

Cant seem to drag or see mp4 files

Is iTunes compatible with Dell DJ?

My iTunes Library file becomes damaged very frequently, re-install can't solve the problem. Any suggestions?

My DVD Player is playing, but there is no sound.

I want to make a "best albums of 2013 " video with albums covers and my my audio talking about the video for uploading to YouTube. I can handle the subtitles part, but have no idea about how to add the album covers and audio to the video.

Why are video games are more addictive than movies, television, music, ebooks, etc.?