Help on Desktop enviroment flash version thingy

ok i have a mac osx feel like desktop envirment, and i have like an itunes like player that i want to use so when i click on my little itunes icon that it will launch it in a window?? and i want the window to be resable if this is to much then i need to decied how i want the apps to work should people have to make there own windows for it, or should the OS envirment launch a window around it. i might even take this as far as people haveing a little file system and they could use it and stuff online and actaully use this OS like thingy, i am gonna be useing it as my home page, there is gonna be a little google sreach applet and i might build one using googles api.

the zip file with the flash os is here
http://www.nitromouse.com/H080J03/FlashOS.zip
and the url of the little itunes apps is here[FONT=monospace]
[/FONT]http://www.n99creations.com/Accounts/mys/mySpace.swf