I think that I maybe didn't explain properly in the first place...
I think that shuffling the whole player is a fantastic way to discover music that you didn't even know you had, and I do spend a lot of time listening to it that way.
Unfortunately, because about half of the stuff I have is on mixed compilations, it's nice to be able to think 'I haven't heard ???? for a while', search for it, then play the rest of the long-forgotten album. -without having to play that tune, read the source, then do another search on that source.
Bearing in mind that I don't know what album it's on to be able to do an insert by source in the first place.
(...and i'm sure i'm not the only one who thinks that shuffling a mixed album sounds unbearable. )
Oli.