... are computers designed to make you feel stupid? My dog destroyed my headphones so I decided to plug in the speakers to my computer. I'm watching the Crufts dogshow online but I don't have sound. Now the speakers each have a jack plug - one is the regular kind, but the other is thicker with a four-sided clip thing (can't describe it any better). I have six jack size holes to choose from to plug them in. I THINK black and grey are for speakers but I have tried every combination - anyway, the bigger sized jack won't go into any of them fully as these bits of metal are in the way. I have gazed at the back of the tower but I simply can't see anything that would take this plug, which is from the "master" speaker (the one that plugs into the power as well). If anyone can make any sense of this, I would be delighted to hear from you - it's Best in Show this evening and I definitely want to hear the commentary for that!