I am looking for a locking audio plug (3.5mm, stereo) but not the type which screws into a special receptacle, instead one which will "lock" into any standard 3.5mm jack. This was described to me as a 3.5mm male plug with some sort of small prongs that extend out of the tip or middle of the plug and essentially grab onto the middle ring of the stereo receptacle. They are spring loaded prongs and can be released by squeezing the part of the plug which extends out of the receptacle, where the cable begins. I understand that this kind of locking might give inferior signal performance, but for my project this doesn't matter. I'm just looking for a male 3.5mm plug which can lock into a _standard_ receptacle. Has anyone ever heard of such a thing or is it a myth?