Whether it is for a podcast, a video, a slide presentation, or some other multimedia project, there will be times when your students need to download sound effects. SoundBible is a good place for students to find all kinds of free sound effects recordings. Students can download files as MP3 or WAV files. And best of all, students don't need to register on the site in order to download the files. But do remember to cite the source of the sound effects as most are labeled with a Creative Commons license.