As far as I can tell, the last info on the Aquaria CD is the post from 2009 on the main bit-blot website. I checked both the links and it doesn't look like either of the shops are selling the CD, so are you all out?
Of course, I can always get the mp3 downloads, but then I'm not sure where to find lyrics.
Evidently coming late to a game doesn't pay :[Alec: CDs are Back on Sale!
Here is the link: http://infiniteammo.bandcamp.com/album/aquaria-original-soundtrack