I think I might take exception to the assertion that "normalcy" has become obsolete. It's frequently heard from broadcast outlets, with concomitant usage by the masses. While "normality" might be grammatically or linguistically more correct, I don't think it is the more frequently used term.
I am originally from the coast of Mississippi (now live in Texas) when I was growing up I remember using Washateria and Laundromat or Laundrymat, interchangeably.
I still do.
The increasingly musty expression "like a broken record" has caused some confusion among digital natives who've heard of broken records only in terms of sports!
Grant, I am of the generation that has used this phrase. I never thought it could ever be understood as a sports record! Brilliant!
However, I think you missed an important point about the word "broken". The complete phrase, as you pointed out, is "[someone] sounds/doesn't sound like a broken record.
I have always used this phrase to mean it sounds repetitive, like a broken record.
In other words, the record is scratched so that a single word or phrase keeps repeating. The metaphoric record would not be cracked in pieces or in part: the record must still be playable in order for us to hear it.
Thanks for a great show every week!
I agree. A brilliant re-interpretation by Grant of the meaning of broken record. I'm sure that expression confuses many in the younger generations.
I've always expected the same would happen to clockwise and counter-clockwise. While Big Ben and other iconic analog clocks will certainly remain (I hope), the move to digital clocks renders those expressions meaningless. Maybe we'll need to switch to another analogy … perhaps based on righty-tighty, left-loosey. 
[Edit: Woohoo! I just saw that this is my 300th post. Love this forum!]
I'm surprised Grant and Martha didn't remember the song:
When the party's gettin' a glow on,
And singin' fills the air,
In the shank of the night
When the doin's are right
You can tell 'em I'll be there!
The song is "In the Cool, Cool, Cool of the Evening" and the lyrics, so far as I can tell, are attributed to Bing Crosby.