Why not use the M Audio? IIRC, it has an Envy24 chip, which makes it superior soundwise to the entire mediocre soundblaster product range.
The PA stuff is not philips, nor old. It is quite new (an InterM M1000 amplifier and Behringer EQ), as are my pair of newest, largest speakers with one tweeter horn, two 8" mid-range speakers and two 18" bass speakers each, the pretty simple but sturdy boxes home-made. That is the new, more powerful system. The DUX stuff is the old one; an older stereo with two DUX speakers and two newer ones also connected.