It's a good start and I look forward to more. My main suggestion would be to give the full details of a card before discussing it. I listen to several X-Wing miniatures podcasts, and this is something almost everyone forgets to do. The podcasters and many of their listeners will know what everything does, yes, but those who don't are completely in the dark and the podcast fails to shed light for much of its audience (and worse, they don't back for more).
I'm listening to a Sliders podcast, and it IS nice how they briefly do a recap of the episode they're going to talk about, eventually covering more details as it goes underway.
Before I memorized most of the cards, I would use Jack Of All Dominion (for Android) as a card reference guide so I'd know what folks were talking about.
I think the podcast would have more audience if it were shorter, I'am a bit discouraged by this 50min lenght (however, I'm not the main audience since I do not understand english very well, especially listening)
Curious... what would be your ideal length?
For me, 20 to 75 minutes usually does it for me. Shorter is nicer in being able to finish it more easily, although I do just whip out my PDA and "set a bookmark" there if I need to resume from the same episode/track. Too short, and it's too much downloading.