Now, don't get your hopes up.

4 seconds sound clip from the The High and the Mighty (1954) movie soundboard.

You can hear this line at 01:17:35 in the DVD version of the movie.

Quote context

[...]

- I've some important papers in my briefcase, many years of work. Can I take them with me?

- Not unless you can stuff them in your pockets.

- No baggage of any kind.

- Come to think about it, the bottom of the sea is the best place for them.

- And one thing more.

- Now, don't get your hopes up.

- There is one chance in a thousand that we can make the coast.

- This isn't possible unless there is a marked change in the wind. And according to our forecast, it just couldn't happen. But it could.

- And the one thing we can do right now to help matters is to lighten ship. That way we'll use slightly less fuel.

- So, if any of you gentlemen have ever had an urge to throw things out of windows, this is your chance of a lifetime.

[...]