Unless I am missing something, I can't delete a library asset. I gets pretty cluttered as the design progresses. Is the delete feature going to be incorporated in the final build?
The ability to delete items from the library is something we've been talking about, so it's good to hear you've run into this, too.
Currently, the way to get old items out of your library panel is to switch to code view, expand the project in your project navigator panel, expand the src folder, images and swfs will be in the assets folder, components in their own folder. Select the desired item and use the context menu to delete it.
Be careful with this, though, it's possible to break your project if you delete the wrong assets. It's kind of a 'secret back-door', so I wouldn't recommend relying on this technique...
I now have a large 200mb fxp project file even though the SWF is only 4.3MB. I would love to delete assets... can't wait for Beta 2 or v1.0
Noticed that each time i optimize a 1000x600 Live Trace graphic from Illustrator that my fxp files jumps an additional 40MB... is this normal? Got the SWF down to 2.8MB now from 4.3MB... figure if I convert some more of my bitmap images to Live Trace then it will be going down even more. I just don't want my project file to hit a GB.