can here .wav files only as root user
 

I posted here a couple of weeks ago because I could not get sound to work - I was testing my sound card as the user. I could however play mpeg files and got sound out of all of my games so I didn't worry about it too much :)

recently I logged in as root to do a few things and lo and behold I had sound. I have since confirmed that .wav files can only be heard using su.

How can I fix this?

PS
I am running RedHat 7.2

you probably need to change the permissions on the sound devices - /dev/snd, /dev/ dsp, /dev/mixer, ect.
you can change them using

chmod 777 dev/whatever

as root so that all users will have permission to use the sound devices.