The music is pretty cool, isn't it?
Sadly, there's no downloadable Alteil music available... yet.
I say "yet", because Alteil ring tones were available in Japan, so I can't say it for sure.
But I'll make sure to tell Japanese staff that you asked us about the music.
By the way, I've been hearing the music for so loooooooong that I always hear the music in my head lately though. :p