If anyone is curious what spoken Na'vi sounds like outside of the Avatar movie, here's a roughly 10 minute clip I recorded of me answering some questions about myself, entirely in Na'vi. (Or download it directly)
Oeru txoa livu ma oeyä eylan. Oe ke parmankxo fìaysrr slä oe lu rusey! Fpìl ke oe kea futa tsun aynga tsivam oeyä aylì'ul ha oe ke perankxo nìtxan nìNa'vi.
Srane, Na'vi. Ral si eana sute atsawl uniltìrantokxä.