The real trick is if somebody can encode the tapes into a quality so high that you can actually use the DVD's to play the interactive stuff on a TV.
I tried to do this on my family's hardware DVD recorder with my "training videos" but I ran out of time (and accidentally put them on the "low quality" setting. They're animated, so they need high quality.
Thankfully the TV episodes are only 20 minutes long, and I believe each Training tape is like 10 minutes long. So you could max out the quality on some single layer DVD's I would think. The mpeg encodes out already are too low quality, the flashing lights drop frames and turn into solid colors, and don't work with the game.
Might want to put an epilepsy warning on these, they flash as much as a lightgun game in places, and the colors in those targets are BRIGHT!
Family Video chains still often rent the episode tapes (which are also interactive). The training videos are usually sold as a 3 tape set or with a powerjet (originally I think the powerjet came with one tape, the phantom striker.. that is the "bad guy" version came with another tape, or you could purchase them seperately). I think only half or 1/3rd of the 22 official episodes (there was also a commercially released "gag tape" which I believe was censored since there is a low quality alternate version that's shorter and has some swearing and a gay joke or two in it) were released, so any other tapes you get would have been fan dubs. But the TV show when aired like on SkyOne (?) or canadian space channel would be interactive as the day it was first aired. The 15 year old tapes I bought worked for me!
I wish they would show these on Sci-Fi, or even some HD channel, that would be totally awesome!