BS.Player and BS.Player's Control Bar are two programs. You need not install the control bar to be able to enjoy BS.Player. (Simply deselect it at BS.Player's installation). As a rule you should also be able to uninstall the control bar after installation (leaving BS.Player installed) the normal way you uninstall any program in Windows (of course the toolbar is a browser plugin for IE and FF, so you should not have these browsers active when uninstalling).
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princethrone: Vista user? [Maybe UAC-related?]