This project shows that simple stereo sound is possible with Scratch. Wear headphones! How to tell if your headphones support stereo: 1.) Look at your headphones cable. 2.) The end of it (the part that you plug in) has black rings around it. 3.) If ti has 1 ring, that means that it is mono sound (not stereo), if it has at least 2 rings, it should support stereo sound. Sometimes headphones come with the ability to support stereo sound, but play mono sound. -- What is the third black ring for? -- The third black ring is for microphone usage. If the headphones have a microphone in them, they will have this.
Feel free to use!