- Who's that?
- Santa Claus. Welcome to the family, buster.

4 seconds sound clip from the White Christmas (1954) movie soundboard.

You can hear this line at 01:58:38 in the Blu-ray version of the movie.

Quote context

[...]

- OK, Byron.

- I'm dreaming of a white Christmas just like the ones I used to know, where the treetops glisten and children listen to hear sleigh bells in the snow. (2)

- I'm dreaming of a white Christmas with every Christmas card I write. (2)

- May your days be merry and bright and may all your Christmases be white. (2)

- I'm dreaming of a white Christmas just like the ones I used to know, where the treetops glisten and children listen...

- Who's that?

- Santa Claus. Welcome to the family, buster.

- Look at this. Relatives already.

- Wallace and Davis are flat, you know.

- We've got to get some loot. We've got to take the show to Chicago.

- No, no, no, no. I can't make it. I'm gonna be very busy here.

[...]