1. Add the folder where those VST *.dll files are located
2. Make sure that the plugins are proper architecture (64-bit for 64-bit SoundBridge and 32-bit for 32-bit SoundBridge)
I like talkbox and vocoders way more than autotune. Autotune is a good effect for robotic voice I despise how every artist is using it. Especially when an artist sings live and his voice is different than in a song because the live shows dont use autotune