Music, designs, photos, illustrations, and so forth are intellectual creations and copyrighted works. You are not allowed to use them in part or in whole without permission from the creator.
Multimedia such as animation, slideshows, video and podcasts offer a great opportunity to combine text, graphics, sound, and moving images to deliver meaningful content.
Use multimedia content only when you want to attract attention. The animation, video, or sound must be closely related to the context of the page. Use only stable technologies that work for Windows, Mac and Linux/Unix machines.
Images can convey information, evoke emotions and often relay a message better and faster than words. But useless images are a waste of time and they will be ignored.
Your website is a part of a conversation. Users come to the website because they are looking for information or want to complete a task. They have a specific question in mind.
It’s your task to answer these questions as fast as possible. Don’t waste their time. Let them grab and go. They are in a hurry.