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