Image library
TVPaint's Image Library will give you the ability to import, save, store images for each of your Projects. It is also capable to store audio tracks which can then be imported in the Timeline. Finally, Rigging in TVPaint will also require you to know how to use this Library. It can also store a full Rig or a rigged animation so it can be recalled or easily shared with someone else.
Starting with TVPaint 12.1.0 the Image Library also allows you to import audio tracks. To do so, simply right-click on the Library panel and select the Add sound option.
Doing so allows you to load audio tracks from the Library, as reviewed in the audio section of the user manual, as well as the Storyboard section.
The Image Library is only available to TVPaint Professional users.
Video tutorial
Here is a video tutorial you can follow to learn how to use the Library. The Ramona Crow example project can be downloaded here.