Podbringer currently has no front-end or web interface yet that can help you use it. Until then, you just have to enter the right service-specific RSS feed URL in your favorite podcast client to start using it.
Given the Mixcloud URL
https://my.domain.tld/podbringer/feed/mixcloud/myfavouriteband |------------------------------| |-------||--------------| The Podbringer location URL Service User @ service
The Podbringer location URL of this instance is: {{ url }}