(I'm not sure if this is the correct place to post this, but it
seemed like the most appropriate thread. If there is a better place, feel free
to move it.)

Hello Fellow Minecrafters,

     I'm a huge fan of Minecraft, as I'm sure everyone else here is. I'm also a music producer and I thought to myself while playing that the game could use some different/more tunes and sounds. Therefore I have decided to make my own Soundtrack for the game, as well as some downloadable SoundPacks that I will be releasing over the next couple weeks.

These will all be free downloads.

If you do not know how to add your own music/sounds to your Minecraft game...this is the easiest/best way to do it in my opinion:

"Replacing the sounds or music in Minecraft is relatively simple.
First you should navigate to the folder where Minecraft stores its sound
files.

MAC:

/Users/~Library/Application Support/minecraft/resources

Windows:

C:\Users\[insertuser]\AppData\Roaming\.minecraft\resources

The majority of the sound files are in the folder “newsound” and the
music files in “newmusic” All the audio is (as far as I know) 16 bit
44.1kHz .ogg files. Predictably, the music files are in stereo and all
the sfx are in mono. To swap these sounds we basically will just be
overwriting them. I would recommend starting by backing up all the files
you will be overwriting.

Create a folder that will contain your soundbanks. It doesn’t really
matter where you put it. Take the first sound that you want to replace
and reproduce its folder tree into your soundbank folder (example: copy
resources/newsound/liquid). Export your replacement sound to this folder
as an .ogg at 16 bit 44.1k and give it the same name as the original
sound. Repeat this process for every sound you want to replace. When you
are ready, just merge your soundbank with the resources directory. If
it worked correctly it will ask you if you want to overwrite some files.

Now, to prevent Minecraft from overwriting these files every time you restart the game, you need to download and install http://www.minecraftforum.net/topic/131934-v166-epinulls-mods-sme-update/ or http://www.minecraftforum.net/topic/633749-19-pre-2-181sound-mod-enabler/ depending on which one is up to date with your version of Minecraft.

Be aware that every official update to Minecraft completely breaks
the sound mod so you either have to stick with the default sounds until a
new version of the sound mod is released, or copy files into the
resources directory after the game is already running (this requires you
to do it every time you start up the game).

Good luck, and let me know if you run into any problems."

directly cited from: http://ngama.wordpress.com/2011/03/09/tutorial-minecraft-sound-modding/

Another alternative, if you do not wish to overwrite the original music files, but instead add to them:

see this thread by Risugami, and look for his AudioMod:

http://www.minecraftforum.net/topic/75440-v100-risugamis-mods-everything-updated/

Here is a video on how to install the mod for PC:
http://www.youtube.com/watch?v=97khl7AVQ-I

Here is a video on how to install the mod for MAC:
http://www.youtube.com/watch?v=xhITX5wyRGg&feature=related

I'm going to start by releasing this first track called So Many Blocks, So Little Time.

Preview it here:
http://soundcloud.com/casesensative/knuck-beatz-so-many-blocks-so

You can download the full high-quality .ogg (first method) or .wav (audioMod method) file to add to your game for free from my website.

Download: http://knuckbeatz.com/high-skore

The only thing I'm asking for if you enjoy these tracks and soundpacks is to show some support!

You can follow me on Facebook - http://www.facebook.com/whoisknuckles
You can follow me on Twitter - http://www.twitter.com/knuckbeatz
You can find my Soundcloud - http://www.soundcloud.com/casesensative
You can catch my Youtube channel - http://www.youtube.com/knuckbeatz

More tunes and SoundPacks are on the way very soon.

-Knuck Beatz