Confirmed...

I have confirmed that this information is in fact on the prosecutors' tapes:

Yesterday Chen's office released the testimony of Koo from November 4th... Prosecutor Chu Chao-liang (朱朝亮) said to Koo: "How about we first chat about some details of the case, I want to understand first and then I will tell you what other [witnesses] have said, and then we can [compare and decide] whether or not the testimony is correct."

Chen's office said this shows the special prosecutor was obviously attempting to lead the witness, and that later, Chu also said: "The amount of 400million is something you ought to say. You think about it, because it has already been a long time [since this happened]. At least we are sure that this is what you said to [Taiwan Cement Group (台泥) chairman] Leslie Koo (辜成允), this is [the amount] you mentioned to Leslie Koo."

Most damning of all?

Prosecutor Wu Wenchung (吳文忠): [responding to a question from Koo] "Yes, otherwise it will be exhausting later. If we can, we'd like to finish [your testimony] today."
Prosecutor Chu: "Take your time thinking about it."
Jefferey Koo: "I understand what you mean. I need to at least help, I must avoid being more of a hindrance than a help."
Chu: "You must avoid being more of a hindrance than a help, [otherwise] [the case] will be wrecked."

The prosecutors argue that immediately after that dozy of a line, Chu said "But of course you should tell the truth." But I think the implications are obvious.

Again: Chen & his wife are clearly guilty of tax evasion, and very likely took some very large "political donations" and returned favors, which pretty much constitutes the definition of a bribe even though it may be hard to prove legally.

But that in no way makes the highly personal, politically-tinted prosecution of Chen any more comforting.