Keep Circulating the Tapes: All 13 episodes were available on Cartoon Network Video back 2008, but they since got taken down and will probably never make an appearance again (the episodes didn't even appear when Cartoon Network was celebrating its 20th birthday and they put all of its classic shows on their website. Even Time Squad aired episode clips during that time) unless the channel feel generous and puts it on its retro channel (Boomerang) in a few years.
And if you have the episodes where Robot actually HAS a robot voice, don't get rid of them (and to those who do, please put them on a video site or on a torrent so others can share and enjoy).
DailyMotion (one of YouTube's many competing video websites) has some episodes available. The bad news is that most of them are the redubs with a human actor as Robot Jones rather than the computer speech function version (the episode "Growth Spurts" on the DailyMotion website is not only the "human voice" dub, but also edits out the "Kick Ass" banner that appeared near the end of the episode by covering up the "Ass" part with digital paint that matches the color of the banner). The good news is there is one episode that has Robot Jones' original "voice." That episode is "P.U. to P.E."
The Other Darrin: Robot's synthesized Macintosh voice was eventually replaced by human actor Bobby Block.