Go to the Scratch website by clicking here. Click on 'Create' to start a new project.

Click on your sprite and select the 'Sounds' tab. Click on the 'Choose a Sound' button and explore the sound library. Choose a sound that you like by clicking on it, and then click 'OK' to add it to your sprite.

Go to the 'Code' tab of your sprite. From the 'Events' category, drag the 'when green flag clicked' block to your script area. Next, from the 'Sound' category, drag the 'start sound [sound v]' block under your event block. Make sure to select the sound you added from the dropdown menu in the sound block.

Click the green flag above the stage to start your project. You should hear your sound play. If you don't hear anything, make sure your volume is turned up and check your code to make sure it's correct.

Now, let's add another sound to make your game more interesting. Go back to the 'Sounds' tab and choose another sound from the library. Then, go to the 'Code' tab and drag the 'when sprite clicked' block from 'Events' category to your script area. From the 'Sound' category, drag the 'start sound [sound v]' block under this event block. Make sure to select the new sound you added from the dropdown menu in the sound block. Now, when you click your sprite during the game, it will make a new sound!