No doubt some people may find this chart from Microsoft of assistance.
http://windows.microsoft.com/en-au/windows-vista/windows-media-player-keyboard-shortcuts
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Dane Trethowan
Skype: grtdane12
Phone US (213) 438-9741
Phone U.K. 01245 79 0598
Phone Australia (03) 9005 8589
Mobile
Keyboard Shortcuts for Windows Media Player for Windows XP
To: Move left, right, up, or down menus and lists
Press: ARROW KEYS
To: Play an item
Press: ENTER or SPACEBAR
To: Display the Help menu
Press: ALT+H
To: Display Windows Media Player Help
Press: F1
To: Display the anchor window menu
Press: