The Seam JMS 3.0.0.Beta1 package can be downloaded at http://sourceforge.net/projects/jboss/files/Seam/JMS
You can find our Reference Guide as well as API Docs
The easiest way to get started in a maven project is to include the following dependency in your project. You'll need to make sure you have a repository reference to the JBoss Community Repository.
The core API for the module is around the MessageManager interface. This provides a series of convenient methods
You can also statically define routes within your application, both ingress and egress. You can define interfaces defining routes. Further details can be read in the Reference Guide.