Here you can specify a list of directories separated with semicolons. Apollo will scan through these directories for digital signal processing (DSP) plug-ins at the startup. The refresh button will re-perform this scan and update the available plug-ins list.

The upper combo box contains all found DSP plug-ins. The combo box beneath it lists all modules in the plug-in selected in the upper combo box. With the Add button you can move the selected module to the active module list (thus making the module active). The Configure button will bring up a configuration dialog for the selected module.

This is a list of all active DSP modules in all available visualization plug-ins. The audio data will be passed to the modules in the order they appear in this list. You can change this order with the arrow buttons beneath the list.

With the Remove button you can remove the selected module from the active modules list (thus making it inactive). The Configure button will bring up a configuration dialog for the selected module.