you'll need to add entries to your /etc/fstab file. to run mp3's youll need relevant permissions. Ill post my file and show you what i mean.
Code:
/dev/hdb1 swap swap defaults 0 0
/dev/hdb2 / ext3 defaults 1 1
/dev/hda1 /windows vfat auto,rw,user,exec 1 0
/dev/cdrom /mnt/cdrom iso9660 noauto,user,ro 0 0
/dev/writer /mnt/writer iso9660 noauto,user,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,user,rw,exec 0 0
none /dev/pts devpts gid=5,mode=620 0 0
none /proc proc defaults 0 0
The fourth colum needs to have exec in it for you to be able to execute programs. user means that users can do stuff on that drive. The auto/noauto means that the drive will be mounted automatically on start up if auto and won't be mounted on boot if set to noauto.
for you're dvdr drive will need to be setup here in the fstab either by putting an entry like
Code:
/dev/hdd /mnt/dvd_mount_directory iso9660 noauto,user,ro 0 0
or by soft linking /dev/hdd to something easier to remember (like /dev/dvdr) then putting that instead of /dev/hdd.
I'm afraid I don't know much bout SCSI disks I'm afraid. I suggest looking at how the other disks are set up in your /etc/fstab and altering them to fit the other drives.
As for the mp3 issue, try using vfat instead of msdos. All my music is on my windows drive and reads fine
HTH
Alex
