Costumes Tab & Costumes Panel
By changing costumes we can make a sprite appear as if it is moving. Have a look at this Scratch Card - Moving Animation. Try it in your Scratch project.
The Sound Editor
Scratch already has some sounds included that you can use in your project. You can also import your own sounds.
It is really important that you do not use sounds/music that belongs to somebody else without their permission. You should only use 'royalty-free' sound clips.
There are different sound file formats. The best type to use with Scratch is 'mp3'.
We'll add some sound to our projects now and then we can find another sound to import.
Costume Tricks
There are some neat tricks you can use with the costume tab.... like rolling (not moving) a ball. http://scratch.mit.edu/projects/24911816/#editor