I found that Headliner is a very good tool for podcast promotion on social media.
The setup and process is very user friendly. A lot of the time with external desktop apps they do most things well then one thing lets it down. That can mean you have to go back to your original editing process to make it happen.
We used it when we got Alan Keegan from the We Welcome Your Teams podcast a slot on Talksport.
It meant we had even more audio to promote the pod, beyond just the content
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