Would anyone be interested in an Album Shuffle Mode? For example, if you had a playlist named (Celtic) and under (Celtic) it had the artists Capercaillie, Gaelic Storm, and Great Big Sea, and under each artist it had several of their albums. When in Album Shuffle Mode, if you select the playlist (Celtic), it would pick an album at random, and play it all the way through in the albums original order, then select another album, etc. The definition of an album would be any playlist that had music tracks in it (instead of just more playlists).

I also own a PJB100 mp3 player and it has this feature and I use it alot.