From:
http://boards.cityofheroes.com/showflat.php?Cat=0&Number=3796307

Description: Hasten activation
Folder name: powers
File name: hasten.ogg, hasten2.ogg

Description: Targeting Drone loop
Folder name: weapons
File name: targetdrone_loop.ogg

Description: Prestige Power Slide loop
Folder name: enemies
File name: Green_loop.ogg

Description: while flying or hovering
Folder name: powers
File names: air_loop.ogg, Flight1.ogg, Flight_loop.ogg, Flight1_loop.ogg, Flight2_loop.ogg, Flight3_loop.ogg, Groupfly_loop.ogg, Hover_loop.ogg

Description: Super Speed activation
Folder name: powers
File name: Run5.ogg

Description: Super Speed loop
Folder name: powers
File name: ForceField5_loop.ogg

Description: Fortitude loop
Folder name: powers
File name: intel_loop.ogg, Intel2_loop.ogg

Description: Dark Armor loop
Folder name: powers
File name: miasma_lopp.ogg, obsidian_loop.ogg

Description: Ice Armor loop
Folder name: powers
File name: IceArmor_loop.ogg, IceArmor2_loop.ogg

Description: made when using (or queuing) a power that hasn't recharged yet
Folder name: frontend
File name: Recharge.ogg

Description: Shadow Cloak loop
Folder name: enemies
File name: Blue_loop.ogg





Description: Stealth loop
Folder name: Powers
File name: glow3_loop.ogg

Description: Unyielding loop
Folder name: Powers
File name: glow6_loop.ogg

 
Description: Temp Invulnerability loop
Folder name: Powers
File name: glow5_loop.ogg

Description: Teleportation
Folder name: Powers
File names: teletrans3.ogg and teletrans4.ogg

Description: PVP warning siren with the countdown in Bloody Bay, Warburg etc.
Folder name: Arena
File name: BeepWarning.ogg

Description: Mercs/Burst Sound
Folder: Weapons
File: Mercenary_machgunburst.ogg

Description: Mercs/Slug Sound
Folder: Weapons
File: Mercenary_singleshot.ogg


Description: Shout (the annoying echo at the end of the power)
Folder: powers
File: SonicMassiveBlast.ogg


Description: rage loop 
Folder: Powers
File: glow6_loop.ogg

Description: unyielding
Folder: Powers
File: forcefield5_loop.ogg


Fiery Aura:
Blazing Aura's Start: Ignite2.ogg
                      Fireball1.ogg
 
Blazing Aura's Loop: FireSword_loop.ogg
                     aura5.ogg
                     aura6.ogg
                     aura7.ogg
 
 
 
Fire Shield's Start: Ignite2.ogg
                     firezap2.ogg
 
Fire Shield's Loop: FireSword_loop.ogg
 
 
 
Plasma Shield's Start: Ignite2.ogg
 
Plasma Shield's Loop: plasmafire_loop.ogg

Arctic Fog's Start: blizzard.ogg

                    chillhands.ogg

 

Arctic Fog's Loop: fog_loop.ogg


looping sound for the Energy Melee attacks: ForceField5_loop.ogg

Description: an angry yell, toon gender specific
Folder name: player
File names: Female_Rage.ogg, Male_Rage1.ogg


Description: Practiced Brawler loop
Folder name: Powers
File name: fast7.ogg

Description: Erroneous "yell" sound (8/1/06 bug) for Huge characters
Folder name: Player
File name: Male_Rage2.ogg

Description: (Female) 'Rarr' Yell used in Tough, Integration and Tarzan emote
Folder name: Player
File name: taunt4.ogg


Description: Login game "music" (noise ^^)
Folder name: FrontEnd
File name: V_Music1_loop.ogg

Description: Login game "music" (noise ^^) for Villains
Folder name: FrontEnd
File name: V_Music2_loop.ogg

to replace the really weak " pzzt zznt znnt" sound of Charged Brawl..
the path is 
data\sounds\Ogg\V_Powers\elecpunch3.ogg
Havoc punc is
data\sounds\Ogg\V_Powers\elecattack2.ogg
Jacob's Ladder is
data\sounds\Ogg\V_Powers\TeslaShotgun.ogg
Thunder Strike is
data\sounds\Ogg\V_Powers\ElecThunderPunch.ogg

Description: In Grandville, the zone's ambient noise
Folder name: V_Grandville
File name: Grandville_loop.ogg

Description: In Grandville, the German loudspeaker voice
Folder name: 5th Column
File name: PropPA_loop.ogg

Description: Psionic Dart wubba wubba wubba
Folder name: powers
File name: psionic4.ogg




Try these, Folder\file name:
Peregrine\reactor1_loop.ogg
Peregrine\reactor2_loop.ogg
Tech\Room3x_loop.ogg
Tech\spacemachine1m_loop.ogg
Tech\spacemachine1_loop.ogg
Tech\Teslaroom1_loop.ogg
Tech\Teslaroom2_loop.ogg
Tech\Teslaroom3_loop.ogg
Tech\Teslaroom4_loop.ogg
Thank you. I did these but still get some more sounds. One sounds like a train.

Any other suggestions?
sound1\auto\Train_Loop is that one, still working on the humming.

and the humming is:
sound6/ogg/tech/lowpulse2_loop.ogg

I now have completely quiet Portals, yay!


Description: Cloaking Device loop
Folder name: powers
File name: glow8_loop.ogg



