The job of the disk jockey is not particularly arduous, but there is still that fiddly business of finding the cassette with the right commercial on it and loading it into the machine – but that task has now been de-skilled too, says the Wall Street Journal: a Lenexa, Kansas firm, Computer Concepts Inc has a $22,000 personal computer-based system that enables radio stations to store all their commercials and jingles in digital form on hard disk and enable them to be scheduled, and played at the touch of a button – with enhanced fidelity.