SO Rekordbox performance pack uses the same driver version as the DDJ-SX2 did with Serato and Traktor. Previously with other software I was able to choose the MICROPHONE audio device to route my master audio to other programs to stream online. With RB 4.0 and the Performance pack , no audio comes through here now. Also . When trying to select Speakers (DDJ-SX2) inside Preferences/Audio It always gives a error. As of right now there is no possible audio device you can select within your PC to capture audio to another program IE Audacity/Ableton or any other recording/streaming software. This is a deal breaker for me as of right now. I was going to purchase it until I realized this problem. Any suggestions or workarounds? I have also tried using ASIO4ALL and it didn't help.