There is also the less expensive Live Stage Studio Pro. ~500 dollars.
95 percent of what you would use Director for is in Quicktime.. Quicktime is a multi-track movie player. You can have intereactive Flash tracks...etc. Toggle between one english sound track and a spanish one.
Live Stage Studio pro cost much less than Director when you consider you have to spend double for director if you want to create a dual platform interactive CD.
For more money there is iShell from Tribeworks.
I would go with Live Stage Studio pro. If your doing this for a a living where you have to create dyanmmic interactive cd that hook into databases, websites,...etc then Director is the way to go.