Tried to change the settings in UMPlayer, nothing. When trying to mount in SpaceFM I got;
udevil: /dev/sr0 is known to mount - running mount as current user
udevil: warning 45: options ignored for device in fstab (or specify mount point)
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
blaze@vsido:~$ dmesg | tail
[11570.810714] UDF-fs: warning (device sr0): udf_fill_super: No partition found (1)
[11570.878145] sr 7:0:0:0: [sr0]
[11570.878158] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[11570.878164] sr 7:0:0:0: [sr0]
[11570.878170] Sense Key : Illegal Request [current]
[11570.878177] sr 7:0:0:0: [sr0]
[11570.878193] Add. Sense: Illegal mode for this track
[11570.878199] sr 7:0:0:0: [sr0] CDB:
[11570.878203] Read(10): 28 00 00 00 00 10 00 00 01 00
[11570.878253] isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16