Science fiction audiobooks

Time Traders, (Version 2)
If it is possible to conquer space, then perhaps it is also possible to conquer time. At least that was the theory American scientists were exploring in an effort to explain the new sources of knowledge the Russians possessed. Perhaps Russian scientists had discovered how to transport themselves back in time in order to learn long-forgotten secrets of the past. That was why young Ross Murdock, above average in intelligence but a belligerently independent nonconformist, found himself on a "hush-hush" government project at a secret base in the Arctic. The very qualities that made him a menace in civilized society were valuable traits in a man who must successfully act the part of a merchant...
The Creature from Beyond Infinity

A lone space traveler arrives on Earth seeking a new planet to colonize, his own world dead. At the same time a mysterious plague has infected Earth that will wipe out all life. Can a lone scientist stop the plague and save the world? Or will the alien find himself on another doomed planet?

X Minus One Project
This is a collection of public domain science fiction stories which were turned into half-hour plays for the classic mid-1950's American radio series, X Minus One. All of these stories were added to Project Gutenberg via Greg Weeks and crew at Distributed Proofreaders.
The Green Odyssey

Alan Green is a space traveler stranded on a barbaric planet who has been taken slave and made a consort to an insipid and smelly queen. His slave-wife, though beautiful and smart, nags him constantly. He’s given up hope of ever returning to Earth when he hears of two astronauts who have been captured in a kingdom on the other side of the planet, and sets out on an action-packed journey on a ship sailing across vast grasslands on rolling pin-like wheels in a desperate scheme to save them and return home. Due to the non-renewal of its copyright, this book is in the public domain.

The Variable Man
Predictability has come a long way. The computers of the future can tell you if you’re going to win a war before you fire a shot. Unfortunately they’re predicting perpetual standoff between the Terran and Centaurian Empires. What they need is something unpredictable, what they get is Thomas Cole, a man from the past accidently dragged forward in time. Will he fit their calculations, or is he the random variable that can break the stalemate? – The Variable Man first appeared in the September, 1953 issue of Space Science Fiction magazine.
Mr. Spaceship
The war with the Yucks from Proxima Centauri was claimed to be a stalemate but they were really winning. The mine belts they laid seemed to propagate themselves and were slowly strangling Terran planets. How did they do that? What was their secret? The answer was baffling and the best human minds could only conclude that their ships and mines were somehow alive. So, the next desperate step was to ask "If they are using organic ships, why can't we do the same?". Thus Mr. Spaceship was conceived and carried out. But will a conscious warship do what the generals wish? Perhaps and perhaps something entirely surprising!
Asteroid of Fear
John Endlich needed to clean up his act. Gambling, drinking, a hot temper and wanderlust were the last things Rose and the kids needed. So he went to the Homesteaders Office and signed up to terraform Vesta, a chunk of a once thriving alien planet that had exploded from within; a flat lump of crust which was now the remains of a farm on one side and a mining operation on the other. The miners hated Endlich and sabotaged his plans at every opportunity. They were going to kill him and his family if he didn’t find a way to stop them. - Asteroid of Fear was first published in the March, 1951 edition of Planet Stories magazine.
The Machine Stops
"The Machine Stops" is a science fiction short story by E. M. Forster. After initial publication in The Oxford and Cambridge Review (November 1909), the story was republished in Forster's The Eternal Moment and Other Stories in 1928. After being voted one of the best novellas up to 1965, it was included that same year in the populist anthology Modern Short Stories. The story describes a world in which most of the human population has lost the ability to live on the surface of the Earth. Each individual now lives in isolation below ground in a standard 'cell', with all bodily and spiritual needs met by the omnipotent, global Machine.
A Knyght Ther Was
"But the Knyght was a little less than perfect, and his horse did not have a metabolism, and his 'castle' was much more mobile - timewise! - than it had any business being!" In 2178, once time travel had become a simple task, it had also been outlawed. Those who chose to ingnore this law were known as time-thieves, and Tom Mallory was among the best of them. When he learns the precise whereabouts of the Holy Grail in 542, he sets out to obtain it with the intention of returning it to the 22nd century to make a handsome profit and to settle on Get-Rich-Quick Street. Off to the year 542 he travels to the castle of Carbonek where the great Knight Sir Launcelot is said to have possession of t...
The Eyes Have It & Tony and the Beetles
Aliens have invaded the earth! Horrible one celled creatures disguised as normal human beings ! Well, at least that is what it seems to the author. Yes, The Eyes Have It is a whimsical story, making gentle fun of certain writing styles, but only a topflight science-fictionist like Philip Dick , we thought, could have written this story, in just this way. Tony and the Beetles takes place far in the future when Earth's enormous colonial empire is well established but the question is, how long can it last? 10 year old Tony grows up fast when history catches up with the human race. A sobering look at human history .. and our probable future. Two very different stories but both entertaining.