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ReWire enables system-internal exchange of audio data streams. Or in a nutshell: sharing audio playbacks between programs. In our case, we want to send the audio output from Soundminer to Pro Tools.
You're probably wondering why this should be good, after all, you just have bought a great Dolby Atmos processor or something else with extremely many outputs.
Unfortunately, there are some sticking points, especially when working with Pro Tools as Pro Tools does not like to share its hardware at all to other programms.
The ReWire makes it possible to monitor directly through your editing system and the hardware. So you can hear your playback with the current volume setting, you can control the audio playback with your controller like any other channel and you can playback multichannel files up to 7.1.