Can't listen to music while not root

[Strom]

When i'm not root (normal user) i get an error message, that premission is denied ... for example in xmms i get: snd_mixer_attach: Premission denied

[David_Escott]

are you in the audio group?

[Strom]

guess not ... i'm a newbie ... could you tell me how to get in ?

[David_Escott]

For security reasons normal users are cut off from a lot of things (like su to root, use opengl, use audio, etc). It is all mentioned in the docs but in short you would need to use usermod command it will be

usermod -G Comma,seperated,list,of,groups,you,want,to,be,in you

a good trick is to try
usermod -G `groups | sed s/ /,/g`,newgroup username

this way you dont have to specify all the groups you are currently in (groups | sed s/ /,/g takes care of that)

to give you an idea of the groups I am in

escott wheel cron audio ftp video games cdrw portage

fairly self explanitory (the ftp is so I can modify the /home/ftp directory not so I can use ftp)