THIS IS STILL A BETA VERSION.
I've tried several addons regarding this matter, most of us had the same ideas for Death Grip.
Since some appeared after I tried them, I grew tired of having all the addons using /yell or /say and not a single one had the possibility to turn it off.
So I started to make my own, while during that process, I started to think why only Death Grip? So here's the result of that idea.
You can type /DKSounds or /DKS for options, or you can open menu in-game, select Interface and Addons tab and you will see what you can enable / disable.
So you can have the messages (this checkbox it's for all messages), if you like it, or disable it.
Since I have more abilities you can enable / disable the sound for each one, so you have:
Death Grip: "Come Here!" and "Get Over Here!" - Scorpion MK (2 sounds - Random)
Rune Strike (proc): "Frostmourne Hungers." - Arthas WC3
Strangulate: "I find your lack of faith disturbing" - Darth Vader
Raise Dead: "For the Lich King!" - Arthas WC3
Blood Boil: "Your pain will be Legendary!" - Arthas WC3
Blood Strike: "You will know endless torment!" - Arthas WC3
Scourge / Frost / Heart Strike: "Glory to the Scourge!" - Arthas WC3
Obliterate: "NOW Frostmourne!" - Arthas WC3
Pestilence: "I will make sure, you suffer!" - Arthas WC3
Summon Gargoyle: "Summoning is complete!" - Acolyte WC3
Horn of Winter: "The Lich King has given me true power!" - Arthas WC3
Unholy Blight: "/emote *Frostmourne chants*" - Frostmourne Chants WC3
Death Knight Mounts: "I'm the One Horsemen of the Apocalypse!" - DK WC3
Cannibalize (for Undead DK): "Me eat dead people!" and "Me eat brains" - Ghoul WC3 (2 sounds - Random)
Army of the Dead: "The damned return!" - Necromancer WC3
I'm planning more additions to the future (Icy Touch, Plague Strike, etc)
QUICK NOTE: Delete always previous DK_Sounds folder from your "Addons" folder at this stage, since files could change, on this version (>=0.7b3) i changed the remain WAV to MP3, so you're going to have files that are no longer needed ![Wink](//cdn-wow.mmoui.com/images/style_mmoi_wowi2/smilies/wink.gif)
THIS IS STILL A BETA VERSION.