Ok then next:

Arwen's narration "crownless again shall be king"

Tis indeed!

"Along with everything..."

I really couldn't find this anywhere - is it in the EE?

No it's not in EE. But I'll give you a hint it's said during a Frodo scene

Ah! I have found it! I knew the words and the voice but could not place the speaker but here it is.

About Frodo's 'shiny shirt'.

That's it, all yours Kath

Cheers, thanks for the hint too.

Next:

Oh, I know this one! Is it Merry when Pippin grabs the Palantir for the second time?

Yup, thats the one.

Alrighty, next one: "None but the King of Gondor... "

The King of the Dead to Aragorn in the Paths of the Dead

Yup! That's right. Good work.

Danke. New quote, pretty easy...
"...in friendship and..."

Is it Frodo when he's talking about being back in the Shire. Something like 'and the Fellowship, though eternally bound in friendship and love, was ended'?

Yup, take it away Kath

Many thanks.

Next:

Pippin to Gandalf about the White Tree?

That it be! Go ahead with the next quote.

"That line was broken."

Was it the King of the Dead to Aragorn in the Paths of the Dead?

Yes.

OK

"He's poisoned you against me." Sam to Frodo, talking about Gollum.

Correct!

OK "...not yet..."

would that quote be......

"There are many powers in the world, for good or for evil. Some are greater than I am. Against some I have not yet been measured. But my time is coming." - Gandalf

Yeah, that's it.

"...with the courage..."

Denethor to Faramir. "Is there a captain here with the courage to do his lord's will"

You got it

"...as a burden."

"None of my riders can bear you as a burden" - Theoden to poor old Merry

Yes

Cheers

Next:

" . . . day we . . ."

Is that from Aragorn's pep talk to the soldiers of Gondor before the black gates? "This day we fight!"

Yes it is! Your go.

"You touch it and I'll stick this blade in your gut!"

Gorbag to Shagrat in Cirith Ungol about Frodo's mithril coat.