Huh, I guess everyone just went to the Nicovideo. The DL is here:
http://zsp.6.ql.bz/namewave/index.html
The DL links are oldest at the top, newest at the bottom, so make sure you're getting 156 or later.
Found two crashes/bugs so far, one is if I leave it idle for a good... maybe half an hour, then press f5 to play w/ music, it won't. It still plays the singular sounds fine (space bar), but if I press play one too many times after this happens, it crashes. Another one I just got, is if I change the tempo/note length in the UTAU loader under certain circumstances (still figuring that one out), it crashes.
So this is just your reminder to save early and save often, though this is still the most stable version I've tried.