How can I use both my Usb headset and the 3.5mm phono jack speakers playing
at the same time and even two microphones one that is USB and other that is
3.5mm jack? How about two USB or two 3.5mm jack devices?
Marios, due to Windows stock configuration that is not possible, because it uses only one audio driver at a time. You can use an embedded audio controller in combination with an external one (USB, firewire, PCI, etc) but the Windows Sound Properties will allow using one for input and the other for output. To do what you are looking for it is required a 3rd party software that supports two audio drivers at a time like the ones used by audio DJs in which they can enable two output devices to make the mixes.