The on-board headphone jack on my Dell laptop has loosened up and will probably require a soldering job so I am looking forward to buying a USB sound card instead. The issue is that the pin (I think it is a pin) that senses whether the headphone is plugged into the jack is permanently pressed in (I can't get it out). That is even if I pull out the headphone, the audio is not routed via speakers.
In such a case would the USB sound card work? Assume you have a headphone plugged in already to the on-board jack, would the audio still be routed via the USB sound card? (does it kind of override the on-board sound?)