Pet just didn't like the music--said it didn't work for her and that she couldn't get Bricusse to change anything. I can't remember which song she said she could stand--it was one of the ballads, either "You And I" or "Walk Through The World", I want to say the former. She sang it on the first show. Y'all probably know this already, but she also released a pop version of "Fill the World With Love" that is a nice reworking of that song.
On the second episode, she was talking about whatever her next movie was going to be (was there ever a next movie?) and Merv goaded her a little about Chips and the music and she laughed and said it wasn't going to be a musical so she wouldn't have to deal with any obstinant composer/lyricists.
CP: the CD is enjoyable on its own terms, but it's quite a bit different from the movie version, including rearranged numbers (i.e., sequence is different, though the orchestrations are obviously different, too, LOL) as well as several new numbers. IIRC (it's been a while since I read the liner notes), Mrs. Chipping doesn't die in a buzz bomb accident, but (perhaps, memory failing) giving birth.