im planning to buy an iPod Touch in the coming days and this will be the first time ill be using the iTunes. (ive been using Sonicstage for my Sony mp3 walkman eversince). if i say i have an mp3 file downloaded from a site other than iTunes store would iTunes automatically "recognise" the song? how do i search for the song/album cover/picture so it would appear on my iPod Touch? and can it also recognise "any" downloaded MP4 video?