rxacogg3.dll is a Roxio Audio Codec Component 3.1
belonging to Roxio Audio Codec Component 3.1
from Sonic Solutions
Non-system processes like rxacogg3.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.