How can I use the part TDA7297 in Proteus 8.1?

Hello there!

Thanks for reaching out. Unfortunately, for the symbol and footprint, we don't support version Proteus version 8.1. Would you be able to update your software to version 8.9?

For the 3D model, you can download it and import it by following the instructions in this article. https://support.snapeda.com/en/articles/3758194-how-to-import-3d-model-in-proteus