ReWire Tutorial Article Logic 8 - Step 5: Rendering Audio
Most often, there is no need to convert individual ReWire channels to regular audio tracks! The channels already appear in Logic's mixer, and you can typically perform the same kind of real-time processing as with regular audio channels (effects, EQ, volume, pan and mute automation, etc.).
Still, you may need to convert the ReWire channels to audio tracks, for example if you want to continue working in Logic only, or simply to mix down all tracks including any ReWire channels to a single file. To render ReWire channels to audio tracks in Logic, proceed as follows:
1. Make sure Reason plays back properly via ReWire.
2. Activate solo for the ReWire channels that you wish to bounce down (render) to an audio file.
When you press play you should only hear the ReWire channels, including any effects or processing added in Logic. What you hear is exactly what you will get in the resulting file. If you wish to preserve the individual ReWire channels instead of mixing them down, you should perform a bounce separately for each individual ReWire channel.
3. Open the Mixer, locate the master output fader and press the "Bnce" button in the lower right corner.
4. You will be presented with a number of options: the length of the file, file format resolution, etc. When you have set the options in the dialog to your liking, click "Bounce". Logic will now playback your arrangement and render the soloed tracks to audio files.
When Logic has finished bouncing the tracks, import them into your arrangement.
If you now play back the audio track you will hear exactly what was played on the ReWire channel. This means you should keep the ReWire channels muted (or deactivated) now, since otherwise you would hear the sound twice - once via ReWire and once from the audio track.
Note: Converting ReWire channels this way results in a number of large audio files (depending on the length of the song). Make sure you have enough disk space!
Step 6: More reading