Depending on the number of albums you have, you could use link files from the library options, but once the album files are linked they cannot be played as individual items - sending one linked file to player will automatically add all of the other linked files. If you are only ever going to play complete albums then that is a possibility. A smartlist with the rules Media type is audio; linkstart is not empty and a modifier like 100,1,[album] would give you 1 item from 100 random albums. When sent to the player you would get 100 albums with all of the linked tracks from each album. Each album group of files would have to be linked separately so it can be time consuming if there are a lot of albums, but it would mean that you can exclude files from the selection such as your extras. Being a smartlist you can of course use it as a radio button. I use linked files to group classical music files together so that I always get a complete symphony or piece of work. I also use a rule last played is not in last 3 weeks so I always get fresh material.