SHOUTcast DSP 2.2.3 Available
We're pleased to announce the release of SHOUTcast DSP 2.2.3. This release includes support for streaming in MP3 and AAC+.
Note: Note that the client will also need to support AAC+ (we recommend last version of Winamp).

SHOUTcast DSP 2.2.3 for Winamp: Download Link
This is currently available for Windows.
Note: This version of the DSP plug-in will only work on Winamp 5.5 and higher and requires Windows 2000 and higher.

Once the download has completed, you will need to install the software.
Verify that Winamp is not running, then double click on the installer that you downloaded and follow the on-screen instructions. When the installation process has completed, start Winamp and open your preferences. Click on "DSP/Effects" in the menu to the left, and highlight "Nullsoft SHOUTcast Source DSP v2.3.1 [dsp_sc.dll]". When you have selected it, a new window should pop up. You may now close your preferences window.

Once you have highlighted the proper row, a dialog box will pop up. This is the main SHOUTcast DSP window.
Here, you can configure the server, encoder, and audio settings that you will broadcast with.

Select the "Output" tab at the top of your DSP window. Select "Output 1" under the selection box, and fill in all of the following fields properly.

Address:
Here, you need to enter the server that was given to you in the welcome email you received from ViaStreaming. It should look something like "s1.viastreaming.net". Make sure that you put in the proper server, or else you will not be able to connect.

Port:
In this field, you need to enter the port that was given to you in your welcome email. It should contain 4 numbers. Once again, this must be set properly or else you will be unable to connect.

Password:
You need to set the password that was given to you in your welcome email, or the one that you changed it to. Enter this here, and make sure there are no mistakes.

Use SHOUTcast v1 mode (for legacy servers):
Last, but not least, you need to select option "Use SHOUTcast v1 mode (for legacy server)" to allow encoder to connect on SHOUTcast Server v.1.9.8 (Current Stable Version).

Yellowpage/Directory setup (streaming server display details):
Click on the "Yellowpages"/"Directory" tab right above where you entered all of the previous information.
If you'd like your server to be listed in the SHOUTcast directory, check the "Make this server public" box, and fill in all of the information below the box in a proper manner.
Be sure to check the "Enable Title Updates" and the two boxes that say "Auto" in
order to show your users the title of the song that is playing.

Encoder Settings (select streaming audio format)
Select the "Encoder" tab at the top of your Output DSP window.
Make sure under the selection box, you have selected "Encoder 1".
The Encoder Type can be set to either MP3 or AAC+, our servers support both.
MP3 audio sounds alright, but is compatible with just about every media player on the market. AAC+ is only compatible with Winamp and Windows Media Player (with a plugin), but sounds much better at lower qualities. Be sure to choose wisely.
In the Encoder Settings dropdown, select the bitrate that you ordered from us, and be sure that the line you selected has "Stereo" at the end, so individual sounds will come out of both of your listeners speakers.
Note: If you stream at a bitrate higher than what you have ordered, we will send you a warning email, and your account may be deactivated.

Input settings (select the input audio source)
Select the "Input" tab at the top of your DSP window. Unless you have specific soundcard input settings, or want to talk on your stream, select "Winamp" at the Input Device.
As every soundcard is different and individual, we cannot give any tutorials for the Soundcard Input.
You can choice Soundcard Input option if you want to take audio signal from External Source over the Line In.