Make sure you are licensed for your intended use.

Often, the cost of using a piece of music in a film or video is determined by the intended "use" or broadcast platform of the production. For example, if the intended use for a film is to be broadcast on a corporate website or YouTube, the cost for using a piece of music in that film will typically be less than if the production was going to be broadcast on television, or if it was going to be a major national television commercial.