FlowServer
PURE FlowServer is software that lives on your computer that shares the music you already have on your hard drive with your PURE connected radio.

You can download a copy of this software by following these links:
Windows XP/Vista
Mac OS X (v10.3 +)

To display or get a FlowServer key, which you need to install it, click the name of a radio in the left-hand menu ("My EVOKE Flow", as an example), and then click "Device Info" on that page.

User manuals and Quick Start Guides
If you need to download user manuals for your PURE radio, you'll find them all on the PURE Support website