Stand-Alone MP3 Sound Module (4MB)
Here's a quick and easy way to add sound to any model. This little sound module can make loud sound, and its onboard 4MB of memory is enough to store over four minutes of MP3 sound (4:15 in our tests). Use the included sticky squares to mount it to your model, connect it to a power source (sold separately), and just press the included button to play. It doesn't get much easier than that!