[philosopher]

I can confirm a perfectly working aquarium including sound (I tested with bubbles and the included "Canon" ) in the latest Windows 7 beta builds for both 32 bit and 64 bit systems.

By the way (since I saw discussion on it), so far Windows 7 is great. Very fast, solid. A must upgrade from Vista - and I like Vista too. And yes, the sidebar gadgets are still there. In fact the implementation is much better.

Anyone having trouble with sound within Windows 7 is probably just going to have to wait for the official release. The problem is most likely non-compatible drivers...