I managed to integrate Youtube feeds into Zenphoto.
Have a look at my site
I used the Youtube API's together with a small amount of code to do this.
It is based off the default theme.
Download from http://www.scgfc.com.au/zenphoto/zenphoto/themes/youtube2.rar
Once the theme is installed all you need to do is add a Gallery Title to the array in the config file (example below) and that gallery will be automatically transformed to display all videos from the corresponding Youtube channel (it uses the gallery title as the youtube channel so it must be identical).
I have made small changes to album.php and added 5 files which all start with youtube_feed, such as youtube_feed_config.php and youtube_feed_functions.php. you will need to change or delete line 15 from album.php as this imports the custom banner from my site.
config array example: $you_tube = array ('GranvilleGoPro','TheFishingShow','blackfin15');
That's all there is to it.
Oh by the way. Part of the code is browser detection and if the gallery is being viewed on an iphone, ipad or ipod, the video is transferred to the youtube app rather than viewed in the standard modal popup window.
I'm sure in the hands of someone with more talent than myself this could be made into a plugin. Feel free to do what you like with the code. Just thought I would share. I don't have time to help anyone with integration but I am happy to answer simple questions.