Inside there's three triple CD cases, which are the first three radio broadcast seasons; The Primary Phase: 'Hitchhiker's Guide to the Galaxy [first broadcast 1978]', The Secondary Phase: 'The Restaurant at the end of the universe [1980]' and The Tertiary Phase: 'Life, the universe and everything [2004]' - with each Phase having three audio CDs and a neat 6 page booklet. This is followed by the three single CD cases: The Quandary Phase (2 CDs: 'So long, and thanks for all the fish [2005]'), The Quintessential Phase (2 CDs: 'Mostly Harmless [2005]', the final series dramatisation with 40 extra minutes over the broadcast version). Then there's the Bonus Disk (1 CD: interviews with Douglas Adams, the cast & production crew). All of the Hitchhiker episodes, including those completed after Adams's death, are referred to as 'Fits' in homage to Lewis Carroll's short poem 'The Hunting of the Snark: an Agony in Eight Fits'. The total run time of all fourteen audio CDs is 12.3 hours. I ripped the audio CD sets to iTunes, and listen on the iPod Classic or on the PC via an Arcam rPAC and Grado SR125s HiFi headphones.