You can now 'pin' a transcript window outside of Rewind so that you can playback audio and/or reference a transcript while multitasking in another app. Pinning the transcript will not automatically surface the window on top of other apps, so arrange the windows/apps on your desktop accordingly.
To pin a transcript:
Open up a transcript window and click on the pin in the upper right hand corner (pin will turn purple).
To un-pin a transcript:
Unpin the transcript by clicking on the purple pin to return back to Rewind.
To close out of a pinned transcript and simultaneously close out of Rewind, click on the red button in the top left corner.