From the commandline, cd to directory of your Grails project. Execute either this:

grails install-plugin http://grails-soundmanager.googlecode.com/files/grails-sound-manager-0.1.zip

Or download the latest build, then execute:

grails install-plugin /path/to/grails-sound-manager-0.1.zip

You will now have new tags available to your project:

• <sm:inlinePlayer />
• <sm:pagePlayer /> + <sm:playlist/>
• <sm:sm:soundManagerAPI />