Podtrac measurement can be used when hosting your podcast on Captivate. You can read the Captivate help article here: https://help.captivate.fm/en/articles/3362935-how-to-use-a-third-party-tracking-code-with-your-podcast
Here are the steps to follow:
Log in to Captivate
On the dashboard, click on Podcast Settings
Scroll down the page to Third-party prefixes
Enter the Podtrac prefix. Here is the Podtrac Prefix: https://dts.podtrac.com/redirect.mp3/
Save