That quote is ambiguous. According to the CWM site, you can download all the music you want for a year. You get to keep the music even if you don't keep the service.

Specs as reported here and here.

• Self-contained PC / keyboard combo with integrated 5-inch touchscreen display
• OS: Windows XP Home Edition
• 1.6GHz Intel Atom microprocessor
• 1GB of DDR2 DRAM
• 16GB or 32GB SSD
• Wi-Fi 802.11b/g/n
• Bluetooth 2.0
• Ultra Wideband HDMI
• USB 2.0 x2, VGA, HDMI, headphone and mic ports
• Weight: 2 lbs