It is Y-shaped, it has red and white RCA plugs and the end has a stereo 3.5 jack.
I use it to connect regular computer speakers' "headphone" jack to its end
and the red/white plugs to the tv's "audio out" (for improved sound).
I checked at various electronics stores, even big-box ones, to no success.
I realized that the famed Monoprice will have it but I'm gonna need its "official" name before
What is it called, plxthx?