Yes, James is right!
I apologize if my response scared you a bit. A basic site is a fairly simple thing to learn how to create and get online. Start with the css and html basics like James stated, go to w3schools and start studying, it will go relatively quickly and they lay it out very well.
Your original post stated four days, that is a fair amount of time to get the basics down without a problem. The best resource you have is google. What you don't know can always be found online. The reason my post read as it did was that you were asking about uploading and displaying videos and blogs with features that more than likely would have to be set up with php coding and all this in four days. My only point was that you may want to step back and get a solid knowledge of basics before diving into php programming and such. Once you get a solid foundation built you can then move up.
What you CAN do with the blogs and videos, etc. is to manually add everything. This, for now, I believe would be the easiest with limited knowledge and just Dreamweaver.
You can create css-based html pages for your blog posts and manually add a link on your home page to it. You can do the same with the videos and music files. Just upload them to your server and manually add a link to them on your home page so they can click and the file will be played on their media players on their computer. It won't display on the pages but would still make them available. Just manually update your links for the recent uploads and move the older ones to a download page of some sort.
If you start this way you can get everything up and running fairly quickly and just add the features you originally mentioned as you learn them.

__________________
Roger - "Bot"

DotComBot.com

I started with nothing and still have most of it...