Audio CD's don't have a filesystem, so you can't mount them. You have to mount a data CD in order to browse it.
You can check how to build the fstab with:
dmesg|grep CD
dmesg|grep sr
dmesg|grep scd
dmesg|grep hdc
One of them should return something like:
markus@mrk-fujibox:~$ dmesg|grep hdc
ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdcMA, hddMA
hdc: TDK CDRW241040B, ATAPI CD/DVD-ROM drive
hdc: attached ide-cdrom driver.
hdc: ATAPI 40X CD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)

And so the line in fstab would be:
/dev/hdc /cdrom iso9660 defaults,ro,users,noexec,noauto 0 0