An alternative is to add downloaded music or other effects from online sourcs and add to your sound track.
There are many websites providing schools background sound effects - here are some examples
The sound clips below can be downloaded and added to your sound track to make podcasts come to life
https://freesound.org/ https://www.epidemicsound.com/sound-effects/categories/crowds/children/
Here are some sites for podsafe music:
Although loops may seem specific to GarageBand or ACID XPress, they are simply AIFF or WAV files that can be used in any audio editing program.
VADS (Visual Arts Data Service): A UK-based digital archive offering over 100,000 visual arts images. These are copyright-cleared specifically for UK learning, teaching, and research