The ffx2_rikku_song_www.bestff.net.mpeg file you have requested: Media / Videos and Trailers / ffx2 Rikku Song - 2.6mb is not available. Perhaps try browsing all files for the game Final Fantasy X|X-2 and upload any files you want to share or are missing. This is the only information we could locate:
Fighting movie where you can see Rikku Spherechange to Songstress ! Rikku changing dressphere to Songstress.