Your search for "70b" might be leading you to a specific build of Vegas Pro 7.0. Here's a quick breakdown of the different updates for version 7.0:
Once installed, go to :
Complete the installation and restart your computer if prompted. Step 4: Activating Sony Vegas 7.0b
Sony Vegas (now developed by MAGIX as VEGAS Pro) remains one of the most iconic video editing software suites in history. Known for its real-time multitrack video and audio editing on standard computers, it has been the go-to choice for YouTubers, indie filmmakers, and professional editors for over two decades.
The installer may ask if you want to install additional companion applications, such as DVD Architect or specific audio editors. Check the boxes for the tools you need, or uncheck them to save disk space. Step 4: Choose Installation Path
Check your Magix or legacy Sony Creative Software account if you previously purchased a digital copy.