hi fellow
if this has been answered, my beg!!!, i have already searched, but i didnt find the answer.
i cant play audio cd with any audio player in my redhat 9. i can play mp3 with xmms. but starngly i can only play audio player with xine. i dont know why. any one has any advice on that?
thanks in advance

I think I can take a guess at what is wrong. Is your computer new? Take a look inside it if possible, and see if there is a cable running from the CD drive to the sound card (or motherboard). It should be thin and small, and have a small white plug on each end.

If you don't have one, then probably this machine is set to take advantage of a windows "feature" by which CD audio is routed via the CPU using direct extraction. Unfortunately when computer manufacturers started shipping machines set up in this way , it sort of took us by surprise. Linux CD Players generally don't support that configuration very well yet.

i got it working now, stupid me, ages ago somehow i put new sound card and disable on board sound, but audio cable was still connected to onboard sound , not new one, sorry about that, thanks to mhearn, if you didnt tell me, i wouldnt have solved that problem.
i have another question
in fstab,
/dev/hda7 /mnt/Dos default,uid=511,gid=511
what uid=511 and gid =511 mean?
thanks

Those are the user/groupmasks that the files will be made available with, in octal. It translates to

-r-x--x--x

ie you can read and execute the files, but not write them.