Best Web editing software on mac?

I need a software program that lets me edit an existing website easily. I have Adobe Contribute CS3 on my XP machine,and I want something similar, but maybe more flexible. And cheaper (or free) would be nice. I’ve downloaded free trials of several programs, and all of them want me to make a new page and then send it to a hosting provider. I want to put in the URL and FTP information for my site and have a program let me edit the existing pages. WYSIWYG is required, but if there’s an inbuilt HTML editor that would be nice. I would also like to be able to integrate music and video, which Contribute CS3 does not let me do. Any help would be appreciated. And it doesn’t absolutely have to me Mac, I have the Win7 beta running in Boot Camp, but mac would b nice.
Thanx for answering, everyone, unfortunately I can’t afford Dreamweaver… And the link that you posted doesn’t work, just goes to a page not found page.

I would suggest Dreamweaver. It’s made by Adobe so it should be similar to Contribute CS3

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