Membership - How can I offer a direct link url so no login is required?

Hi there,

I am trying to protect the RSS feed for a Podcast. Once the user has purchased, they will need to take the RSS URL and add it to their podcatcher (iTunes, Downcast, etc.). These are typically not full web browsers, so directing them to a login page won't work.

Is it possible to provide a direct link url with login information in a querystring? Something like:
mysite.com/premium/podcastrss?user=name@domain.com&auth=brR5Iw9P45EOyDukgRg3Ph4FitTS

There is nothing stopping the user from sharing the feed url with friends, but at least if their email address is in there, it can be tracked. Is this possible?

Thanks!

Joe