I’d like to purchase this song “http://audiojungle.net/item/pirates-war/407743” and use it in a commercial game distrubuted in different shops (Google Play / App Store). Will a single extended license be sufficient for that?
Will this license allow me to use this song in a trailer uploaded to YouTube or Vimeo, or will i need a second license for that?
Youtube need for a regular license. For the game need an extended license. Still you should ask the technical support.