Hi, we have had the Toneport Ux2 for over 12 months now and have not yet used it till today as been busy working and editing midi files on Cubase; We have mixed down our files to audio  tracks now and I have been told that we should use the Toneport as an interface  between the laptop and our mixer for playing back our music for live performance. I have connected the system as such; from USB on laptop to the USB on the Toneport, then from the two Analog Outs of the toneport to the channel inputs on our soundcraft desk. I have previously connected the laptop directly to the mixer via the headphone output of the laptop and have been able to play the files. However, on connecting the Toneport, we are unable to open the Windows Media Files to play the audio tracks we wish too; I have also tried connecting from the headphones output on laptop to the Line Inputs of the Toneport and have still had no success. Failing this I went to the section on the toolbox to load tracks into Toolbox and play them through there though it wouldnt let me do this either. I know there is something simple and silly that I have overseen but could use some help on this to use our Toneport.