OK it's slightly different to mac. If you put your cursor between the partitions, it will show an arrow. This is where you can drag it. If you only see the search window then drag it from just above the media player controls. It 'might' have something to do with the skins used. I also found when playing around that I couldn't get it back after hitting those other smaller arrows to show just the search results or downld list. So I had to physically drag the window back up to show the downld list. Same applies to search results. You may need to drag it down from the top.

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