also does anybody know how to edit sound files i used goofle and didnt find anything

i haven't used gimp myself but if its anything like photoshop, you just cant turn off one specific color (im assuming your thinking of red, blue, green, alpha channels). i could be wrong though, since the dds plug in for photoshop could be a bit diffeent than gimp, and gimp could just handle channels and layers differently. what exactly are you trying to do might help someone understand what you need done.

that error helps

the image needs to be unselected, if you have that dotted line around part of something that is a second layer size, try clicking off on an empty space b4 saving. Or you changed the image size. DDS files can only be 256x256 or 256x512, 512x512, 512x1024 etc. It will not save to dds if it is lets say 500x200. That will need to be a .tga

That sound is your player ui. Open the PlayerRace.entity and scroll down to gameEventData . This is most of the sounds used by that race

in that mass of GameEventSounds you will find 

GameEventSound:PlayerUnitUnderAttack "EVENTTECH_PLAYERUNITUNDERATTACK"

EVENTTECH_PLAYERUNITUNDERATTACK is a link to the GameInfo\SoundDialogue.sounddata which will hold the line for EVENTTECH_PLAYERUNITUNDERATTACK

effect

     name "EVENTTECH_PLAYERUNITUNDERATTACK"

     fileName "EventTech_PlayerUnitUnderAttack.ogg"

change it to something like 

effect 

    name "EVENTTECH_PLAYERUNITUNDERATTACK"

    fileName "HomerSimpsonDOOHHH.mp3"

Place HomerSimpsonDOOHHH.mp3 in your mods sound folder 

You are quite welcome but why break up my name, my fist sounds like you are talking to your hand  . 

In case you are wondering where I got such a weird name check out Mephistopheles 

Turning off channels may not have the desired effect you want. Sounds like you want all channels and paint the beam with the desired colour. Turning off a channel will not get rid of it when saving, you will need to delete that channel. Turning it off just does not edit it.

In photo shop you can 

maybe its the version you use?

If you want to work in specific channels with Gimp you can Decompose the channels into layers. This is how I work with the texture files to add team color, specular, luminosity, etc.

After you are done editing you can Compose the layers back into their respective channels.

they are all over the place, but I don't have any bookmarked.

I actually used very little tutorials learning. I am more of a trial and error guy.

In gimp, that grey checkerboard background means transparent. That is what you want for the most part of sins textures. ZombiesRus has this tutorial I put on the weebly which will show lots of ways to work with gimp for SoaSE.

I opened one of those files. Turned off  Alfa layer (eye is still there but channel is no longer highlighted). Selected paint brush tool. Selected colour red.

Now with the alfa layer off, I can only paint over the existing image.

Double click any of the tool buttons to bring of that tools options box. Now you can lower the transparency (Opacity) of the brush and add another colour and/or effects. Trial and error over and over.

ty all for the help its working now