Apologies if this seems like it should be obvious, but it isn't to me; also I cannot find a simple explanation of what this feature is (perhaps it is buried in some wiki entry on the horribly slow wiki page...)
So, can someone explain what pin/unpin does, and/or verify my suspicions below?
I am guessing that pinning an item means it will not be deleted locally once the cache size has been met, so it's always stored locally for offline playback. Is this right? Is there more to it or is that it?
Thanks, and sorry if this has been answered, I couldn't find a straightforward explanation.