How to add music to your Google Slides presentation | @Tecnoedumx | Scoop.it
From www.pcworld.com - April 26, 2015 9:31 AM
Music is a great way to liven up your presentations and keep your audience engaged. Unlike Microsoft PowerPoint, however, Google Sheets doesn’t include support for audio files. But with the following workarounds, you can add a soundtrack to any slide for a more dramatic deck.

Via Gumersindo Fernández