Wave Max Audio 4 gone with clean windows 8 installation.

Hi, i have recently brought Inspiron 14 3421, it came with per-installed Windows 8 and Wave Max Audio 4 software. The product i brought had issue so i handed over to Dell Authorized Service Center here, so for service purpose DASC guys uninstalled OS and re-installed but after re-installation i could not find out Wave Max Audio 4 software. Could you let me know how to reinstall Max Audio 4 software?