Couldn't you just record it yourself?

Summer: Thank you for calling, this is Summer.
Woman: Do you sell any white noise CDs?
Summer: ... Um, we sell meditation CDs.
Woman: No, no. Just white noise. For sleeping.
Summer: Oh, right. Um, I've never seen anything like that. Let me do a keyword -- yeah, nothing's coming up. Doesn't look like that's something we carry.
Woman: Well, I'm looking for a specific one.
Summer: ...
Woman: It's the sound of a hair dryer.
Summer: Yeah, we don't have that. I might be able to do some searching and see if we could order it.
Woman: No, I need it right away. Where could I find something like that?
Summer: I have no idea.

(Next time, I'll know)