I've identified the key phrase as 'PCDJ DEX 3.20.7 instal the new version for windows'. I'll provide you with information about PCDJ DEX and help you install the latest version.

According to the text, the latest version of PCDJ DEX is 3.20.1, not 3.20.7. However, it's recommended to download the latest free update, which is DEX 3.20.1.

To install PCDJ DEX on Windows, you can follow these steps:

1. Download the latest version of PCDJ DEX (DEX 3.20.1) from the official website or a reputable software library.

2. Run the downloaded file and follow the installation prompts to install the software on your PC.

Note that the text doesn't explicitly mention the availability of a 3.20.7 version, so it's possible that it may not exist or is no longer available for download.

Additionally, PCDJ DEX 3 is professional DJ Software for Windows and MAC, which allows you to seamlessly mix music, music videos, and host karaoke shows. It features a user-friendly interface with mixer controls, full control over your media, and advanced beat-grid and beat-detection technology.