One goes to my speakers, the other goes to my headphones. For the speakers, this is perfect.
However, in order to connect to the headphones I have to connect 2 male 3.5 jacks together using one of these:

They're always fine for a few months or so, but then I lose the left signal and have to roll the jacks around a bit until I hear the correct signal again.
Doesn't matter if I go for pricey gold ones or Maplin cheapo ones, same thing always happens.
I'm not a hardware person (as you can tell from reading this



