Left 4 Dead 2

Left 4 Dead 2

Castlevania: SOTN Menu Music
Castlevania: SOTN Menu Music conflicting files to Diddy Kong Jockey (Sound Mod)
I don't really understand on both addons (Castlevania: SOTN Menu Music & Diddy Kong Jockey (Sound Mod))

I subscribed all of my personal addons in my personal choice. I launch the game, checking the addons and I was interrupting that both Castlevania: SOTN Menu Music and Diddy Kong Jockey Sound Mod conflicting their files.

Can someone tell what the fudge is going on? :|