Based on David Stinemetze's MergedRSS Class

If you ever wanted to have a Zenphoto RSS that for example returns latest images for album x but latest albums for album y this is the tool to use. Just enter the urls of the seperate feeds and it will return the combined feed.

While this plugin is mean for Zenphoto's RSS, you could also use even external RSS feeds. But be aware that hijacking content may be a vialation of applicable laws!