The TI is supposed to allow you to bounce your audio to track in your DAW via the Virus Control software, which basically treats your Virus as a VST (i.e., soft synth) while it is connected to your DAW via USB. However, it does not work properly with Sonar yet. So, you can sequence parts using Virus Control, but in order to render them to audio, you need to connect your Virus TI MIDI in/out to a MIDI port and its audio outputs to your sound card, re-assign the ins/outs in your Sonar MIDI and audio tracks accordingly, then record the part(s) in real-time. This is essentially the same way you would do it with any other hardware synth. It's Friday night and I just got back from dinner/beer with friends, so hopefully, that makes sense, but if not, feel free to ask for clarification

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BTW, did you get your TI yet? Which model - desktop, full synth, or Polar? This is my third Virus (Polar) and I absolutely love it!