Good news, unless it's an April Fool's joke: http://blog.tatoeba.org/2010/04/audio-fo...es-in.html

Of course, being perpetually worried that--and uncertain whether--every sentence you're studying hard in Anki is wrong... well that is unfortunate.

Seems interesting -- I sure do hate April 1st! =_=

In fact that's not an April's Fool Joke. Next time we will take much more attention about the date when posting news ;-). If you still don't believe me, you can check this
http://tatoeba.org/eng/sentences/show/374891 . For the moment only Shanghainese sentences have audios, as one of us is a Shanghainese native speaker, but we will soon add audios for other languages, (first French and Chinese) and then other, the current way to help us is explained on the bog. So if you know Japanese native speakers tell us .

For the mistakes in the sentences, I agree those in English and Japanese are not really reliable, even if Jim Breen correct some each day, we're really lacking contributors in these two languages to review the sentences.
At least a good way to know if you can trust or not a sentence, is too check if the sentence has "belongs to XXX".

If you have any questions ask us

Oh okay, just wanted to be sure. ;p

I'm not too worried about the sentence errors overall, as I decided the only way to get around that 'fear' is to not SRS those types of sentences too strictly, and instead focus on their strengths: getting a sense of collocations, native audio flow, overall sentence structure, etc.