The problem with this audio adventure is that it starts off promisingly. The first couple of parts introduce strange worlds, a plot epic in scale, a melee of characters (including a wonderful turn by Stephen Fry), some excellent cameos (Jacqueline Pearce, Anthony Stewart Head) and some truly Who-ish dialogue from Sylvester McCoy himself. But as for the resolution of the plot points and the 'finale' to the adventure, well it takes anything everyone loved about Who...and destroys it. The entire Time Lord history is rewritten and the Doctor is a completely seperate character to what he is in the series. Even the audio dramas. I can only assume the original story was a tremendous sprawling sci-fi epic and only at the last moment some idiot went, "hey, why don't we make this a dr who story and release it on that merit'. Boy, did they make a mistake. I hereby warn any Who fans that this is not a good buy at all. I cannot imagine a Who fan of any degree enjoying this after they know what happens. It just isn't right.
As for the MP3 edition rather than the radio broadcast only: well, the animation looks tacky - lots of still pics, not like Scream of the Shalka or even BBCi's other audio turned animated Real Time. The interviews with the actors are interesting and the little bios on the different characters are worth a bit of reading, but frankly the whole package is tainted by the disapointment of the actual story, the real meat of the buy. I advise to avoid, I'm afraid.