Solution

Each of the sound clips represents a word fron Sea Shells.

Sea Shells word	Corresponding Letter	Sea Shells word	Corresponding Letter	Tap Code	Final Letter
sit	D	shih tzu	B	4 2	R
witch	A	can	A	1 1	A
switch	B	2	D	2 4	I
armour	C	shoe	A	3 1	L
burger	D	itch	C	4 3	S

Taking the letter corresponding to each word and converting it to a number creates Tap Code. Decoding it yields the solution.

RAILS