Awsome work bro keep it up

Is this just a level design right now? Or can you actually quest through this with a hero?
Ive never played Minecraft but from the wiki it sounds like the custom maps in Warcraft 3.

It's not at all like warcraft. It's a sandbox game.
And no to your first question, the logic and quest elements will be implemented after the map itself is done.

Can I download this map from anywhere?

how can i play this?! it sounds amazing man good work!

pretty impressive

You're my new hero, Laz. <3

Does Minecraft have the ability to play set music in different areas? Have you guys added this in to the different areas in your server?

Wish I had Minecraft to be able to check this out, absolutely sick.

I'm happy someone said that. Yeah in the new update you can add sounds to the game and call them via command blocks. So when someone enters an area a proximity detector will turn on and tell them "You've entered 'area x'" and depending on what area it is I can call a sound file from the resource pack.
The resource pack with all of the d2 songs and ingame sounds is in progress. I've decompiled every mpq file in diablo to check out all the .wav sounds. I'm just sorting them right now in my itunes until I find the ones I will be using. To name only a few :

Cow sounds
Weapon hit sounds
Rogue encampment song
Lut gholein song
zombie sounds
Little fuckers in act 3 sound
Character taking damage
and it goes on and on

There's over 2000 individual sounds in there and some of them are hard to make up. anyway, I'm still working on it.