I use a Behringer xenyx 1204 USB mixer. Originally when i plugged the mixer into my computer, all sounds from my computer would play through the mixer, so when i plugged in headphones into to headphone jack on the mixer, i would hear everything from the computer through my headphones through the mixer. now, however, when i plug my mixer into my computer, all sounds still play through my computer speakers rather than my mixer. The mixer's recording capabilities remain unchanged. why is this?
