Very sorry, I double-checked and it looks like we did already upload that audio (just repackaged from WAV into MP3, which is why it's smaller) - had forgotten to remove that from our to-do list which is why I thought it was still pending.
As far as the missing chapters, unfortunately this is all we've been able to get from Sinolingua so far. We actually don't even mention that there are audio files available for this title at all in our add-on catalog (as we do with other titles for which we have complete / better audio) - we don't want anybody to buy this expecting that it comes with MP3 audio.
However, if you've purchased it recently and are dissatisfied with your purchase without complete audio, contact support and we'll be happy to set up a refund.