It is possible to order DVDs of older lessons so that they do not "vanish into the ether". I like iMandarinPod as light relief from CP. The reading is slower and everything gets explained and spelled out. Also, the content is old-fashioned (lots of stuff about cultural hightlights and Chinese customs), so it is the ideal complement to CP.
They've been making a major mistake though, which I pointed out to them, namely that of reading out wrong examples in their podcasts. I told them they should only read out the correct form, and maybe describe the wrong form, but under no circumstances should the the wrong form be read out loud! If wrong Chinese is read out alongside correct Chinese, there's a 50% chance the former will stick. At least that's how my mind works when listening to a foreign language course.
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