trying to figure out how to play TI-99/4A BASIC cassette files (as .wav recordings) through either my laptop or phone line out so i can load programs onto my new babie without a $$$ flash cart or disk drive emulator
got a multimeter to check it out and---hey, there's absolutely no way this is a cassette cable! in fact, i have absolutely no idea what it's supposed to be, or even if it works with the ti-99 specifically (it has a 9-pin D-sub plug that lots of contemporary micros used)
gonna maybe check *sighs* retrocomputing message boards to see if anyone knows what's up with it, and if it's otherwise useless to me i might try to do surgery on it and make it useful for anything at all (either rewiring to make a working cassette cable or cannibalizing the 9-pin port to make an adapter for my atari joystick c:)
i only made myself bleed once in the process of doing cable surgery 
oh uh did you know that the plastic casings on plugs can help to prevent damage to delicate metal contacts so that they make good connection with the pins of your device