Jelly Belly Answer

So, I received an e-mail back for Jelly Belly and good for them for getting back to me so fast. Here's their response:
"We do not add castoreum to any of our candy; however, we purchase our flavorings from different flavoring houses. They are only required to disclose the top 8 allergens as an ingredient. The rest of the ingredients that make up their flavorings are proprietary so we do not know if any of them contain castoreum."

Wait, what?

Conclusion: They don't know what's in their own candy.