Is there any need for that attitude? The game isn't finished, and you haven't paid anything for it.
I guess you're on windows right? In that case, the sound almost certainly works if the game is compiled with DirectSound, rather than SDL Sound. (at least it did for me a few days ago with the trunk code)
Presumably someone will put release a DirectSound / fixed SDL version quite soon. I haven't compiled the latest RC3 yet, and haven't totally cleanly compiled any version. I could probably upload a version with sound in a few days if no-one else has. However, it'd be preferable if someone who knows the code better does it - I've always had to coax the compiler so far, so I can't be 100% certain that the "insignificant" changes I've made are not foolish.
Also, bear in mind that DirectSound is clearly Windows only, so it's not a full, long term solution - just a temporary workaround. Producing DirectSound versions doesn't really move the project forward, since (I think) the intention is to use SDL sound on all platforms.