We still remember the fun cassette shaped iPhone case. Now the its iPhone 4 version has been released. And the Tuned Up iPhone 4 case will be available soon.
There is no much difference between the iPhone 4 case and iPhone case in appearance. Both of them are shaped as the classical cassette holding a genuine mixtape. Once you flip the clear outer case of the iPhone 4 case, it will turn into iPhone stand propping your iPhone 4 in landscape view mode.
The cassette shaped iPhone 4 case is priced at $19.99 USD. If you like the case, jump to perpetual kid for more details.
Update: the fun iPhone 4 case has been available, please check this article.