Hellothemes forgot to include jquery.cycle.all.js to the skin js folder. This file can be found in the Helloglam theme.
You also have to modify app/design/frontend/default/hellomix/layout/page.xml and add the following line:
just after this line:
And by the way, they also forgot the entire skin folder in the Magento 188.8.131.52 version of Hellomix.
Their themes are nice but there are definitely some errors.