film techniques - What is including a sound from another movie as a tribute called?

Such a gesture could be called a homage or a shout-out depending, as TV Tropes notes, on how elaborate it is:

Homage (literally, an honor or tribute) is the deliberate, but respectful, recreation of one work of fiction within the context of another. Usually this is done for comedic effect, but occasionally it is serious. Sometimes it's both. A Homage is an extended sequence, significantly more than a simple Shout Out, but does not actually constitute a Cross Over ...

I'm unaware of anything used specifically for homages involving soundtracks in films. Besides tribute and the above-mentioned terms, I've also come hat-tip or tipping one's hat used with similar connotations.