Here is a link to their Chinese language site.
Use Google Translate to read it
Here they deal with the speaker problem, you can see a video showing the results of fixing that
http://bbs.o-in.me/thread-4209-1-1.html
and this is the link to their official forum
http://bbs.o-in.me/forum.php
apparently there is a for you can use to send it back for repair