isosize says it may not be an ISO filesystem. read error on /dev/sr0: input/output error. More details: It is a physical CD-R. It has audio files. Here are th

isosize says it may not be an ISO filesystem. read error on /dev/sr0: input/output error. More details: It is a physical CD-R. It has audio files. Here are the folders/files list. Each codec folder contains tracks 1-20 in that format. -CDA (folder) -FLAC (folder) -Full CD (folder) - Contains single file versions of cda, flac, mp3, ogg, & wav. -Information (folder) -Contains file "CDDB Information: Server error.txt" (0 B) -MP3 (folder) -Ogg Vorbis (folder) -Track 01.wav ... -Track 20.wav Dolphin shows the files fine and the device is 'sr0'.'mount | grep -i sr0' returns nothing. 'cat /proc/mounts' yields nothing regarding sr0. sr0 does not show up with 'sudo blkid', but it does with 'lsblk'.