Here is a 3-in-1 device from Brando. The device is a SATA Hard drive dock, a stereo speaker and a 2-port USB hub. The dock includes a 3W stereo speaker and USB audio sound card.
The SATA dock supports both 2.5-inch and 3.5-inch hard drives. It serves also a a standalone speaker system thanks to the line-in function. The dock uses USB 2.0 interface. It is priced at $59.