Controller OK, Software Sigh!

This Hercules controller is the very first DJ controller I ever use. It is simple but could be great and for themselves to practice with him. Could! There are two star deduction for the incredibly primitive software with which it is delivered. The fact that you can not connect headphones to the controller itself, one needs theoretically only a second sound card that can be bought for 2.60 already as cheap USB sound cards. In theory! Practically the supplied software comes clear only with a sound card. Which means you have a much more expensive external multichannel soundcard set or you can use the program VirtualDJ. Here it costs but to let 49 to unlock the controller for the software. While standing on the supplied CD that you can register with VirtualDJ under a link, and that on the underside of the controller, a license key can be found, but the URL has become invalid and on the underside of the controller, there is no Serial Key. Very frustrating!
The Open Source DJ Mixxx program also supports two sound cards, but there are (still) no reasonable default for the DJCONTROL MP3 LE. So it's gefrickle. If you want to get going properly, so you are forced to spend yet more money. Then you can but also to buy an expensive controller with integrated preview function.