1) I downloaded the sound at The Freesound Project, a huge collection of user-contributed sound files, made available under a Creative Commons License. (If you want the “oops”, it’s here.) Registration is free and is required for downloading.2) I dragged the sound file “9020_WIM_oops.wav” into my home directory’s Library>Sounds folder.3) In TextExpander preferences, I selected the Autocorrect group and clicked on the Sound drop-down menu. The “oops” was now one of the choices. (If the System Preference pane is already open to TextExpander, you might need to close it and reopen it.)I think the possibilities are interesting and endless. If you’ve got a sound that would make a great TextExpander alert, let us know in the comments. Even better: upload it to the Freesound Project and give us the link!