In Vista Beta, in the early days of Vista and WMP11 and before it was available for XP users, WMP11 itself was essentially a mix of WMP10 and WMP11 as seen in a few screengrabs. While retaining some aspects of version 10's Energy blue interface, it incorporated WMP11 and WMP12's library style and had WMP11-orientated controls, although they differed from the final version. Also, the option to show song info during now playing mode was kept and in the "About Windows Media Player" dialog box, although it specifically states that it is version 11, the pic to the left still states "Windows Media Player 10". Also, the "9SeriesDefault", "compact", "heart", and "Quicksilver" skins were still there.

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Windows Media Player 11 Beta