Adding sound effects to apps or games in MIT App Inventor is relatively straightforward: anyone who has built the Hello Purr app has already done this.
- Find and download a suitable sound file in either .wav or .mp3 format. A selection of sound effects used in some of our courses is available in the 'sounds' folder at http://bit.ly/fycimages.
- From the Media palette on the Designer screen, add a Sound component to the app, then upload the sound file as the Source for the Sound component.
- On the Blocks screen, use the Sound.Play block to play the sound at the required time.
Other sound recording and playback features are available in the Media palette, but the Sound component is the most suitable for game sound effects.
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