unable to mount a CD and cannot listen to music

[takatsugu kobayashi]

Dear all,

I have recently migrated from Windows to Redhat WS4. I have a problem 
regarding my CD-DVDROM.

When I inserted a music CD and tried to listen to it, audio player 
started to run, but cannot listen to music at all. I checked my sound 
card configuration, but it is properly working. I googled for the 
solution, and changed sound stuff with kmix, but nothing happened.......

Then I thought something should be wrong with mounting CDROMs, and it is 
a problem. When I tried to mount a CDROM, I got an error message like

/dev/hdb: Input/output error
mount: block device /dev/hdb is write-protected, mounting read-only
/dev/hdb: Input/output error
mount: /dev/hdb: can't read superblock

I would not mind the first error because this was a music CD. But I have 
no idea why I cannot mount any CDs...... I appreciate any help in advance.

Taka