It's always been a struggle to find appropriate, royalty-free music that's commercially available and suitable for podcasts. Through Firstory's exclusive music and audio library, you can gain access to free-to-use, commercially-available music files by just crediting the artist.
From Firstory Studio > Content > Music Library, look for the music file you need.
Download the file and use it for your podcast.
Make sure to read the Terms and Conditions to avoid any violations.
Copy the music information seen when downloading and paste it onto your episode's description when used before uploading and publishing your episode.