Struggling with Audio CD access rights in SuSE 8.2

Hello, 
There seems to be something wrong in my SuSE 8.2 system-configuration.

It is not possible to use KsCD and KMix as a user unless I have given as 
'root'  the commands  :
chmod a+r /dev/cdrom
chmod a=+rw /dev/mixer
After every boot, both /dev/cdrom and /dev/mixer only have rw permission for 
'root'.

My user administration says that I belong to the following groups :
    jrm   Jan Elders  500  users,disk,uucp,dialout,audio,cdrom,video
As far as I have understood, this should do the job, but it doesn't !

What puzzles me even more is that I have to give both commands everytime again 
after having booted. Shouldn't the chmod remain effective, also after boot ?
Moreover, I'm also confused by the fact that reading a data-CD is no problem 
at all.

With my SuSE 7.3 I did not have this phenomenon, so I wonder :
1. did I do something wrong in the installation ?
2. or has something been changed with SuSE 8.2 that I have overlooked ?

Can anybody please shed some light on this ?

Kind regards,
-- 
Jan Elders
Nuenen
the Netherlands