Hey Howard
Our Event Aggregator (EA) product only imports from the iCal format or specific APIs (e.g. from one The Events Calendar site to another). It does not handle XML.
If you can get your data in an iCal format (check it validates, like at http://severinghaus.org/projects/icv/), I’d say it would work with EA.
Alternatively, you could use our CSV import or the native WordPress Importer (which is XML but a very specific format, really only useful if exported from one WordPress site to another).
Last but not least, we have a pretty great Refund Policy so you can buy one or many of our add-ons and thoroughly test them.
I hope this info helps. Let me know if you have any follow-up questions!
Thanks
Courtney 🙂