Cannot create folders to USB flash drives

[torreydale]

[member=16]gold_finger[/member]

Code:

drwxr-xr-x   2 root root     16384 Sep  5  2016 Yellowjackets - Greenhouse
drwxr-xr-x   2 root root     16384 Sep  3  2016 Yellowjackets - Live Wires
drwxr-xr-x   2 root root     16384 Sep  3  2016 Yellowjackets - Run For Your Life
-rwxr-xr-x   1 root root   6622299 Sep  6  2016 Yo-Yo Ma - Ave Maria.mp3
-rwxr-xr-x   1 root root  10624340 Sep  6  2016 Yo-Yo Ma - Concerto No. 2 in D Major for Cello and Orchestra, Hob.Vllb_2_ III. Allegro.mp3
-rwxr-xr-x   1 root root   4911813 Sep  6  2016 Yo-Yo Ma - Dona Nobis Pacem (Give Us Peace).mp3
-rwxr-xr-x   1 root root   4493913 Sep  6  2016 Yo-Yo Ma - II. Largo from _Winter_, Op. 8, No. 4, RV 297 from the Four Seasons.mp3
-rwxr-xr-x   1 root root  14014930 Sep  6  2016 Yo-Yo Ma - M?ditation from Tha?s.mp3
-rwxr-xr-x   1 root root  22826678 Sep  6  2016 Yo-Yo Ma - Sonata for Cello and Piano No. 2, Op. 99 in F_ I. Allegro vivace (2004 Remastered).mp3
-rwxr-xr-x   1 root root   6160532 Sep  6  2016 Yo-Yo Ma - Unaccompanied Cello Suite No. 1 in G Major, BWV 1007_ I. Pr?lude.mp3
-rwxr-xr-x   1 root root   8059109 Sep  6  2016 Yo-Yo Ma - Unaccompanied Cello Suite No. 3 in C Major, BWV 1009_ Bourr?e I.mp3
-rwxr-xr-x   1 root root  10436508 Sep  6  2016 ZZ Top - Sharp Dressed Man.mp3
-rwxr-xr-x   1 root root   8529084 Sep  6  2016 ZZ Ward - Last Love Song.mp3
torrey@twdell:~$ ls -la /mnt/sdb
total 8
drwxrwxrwx 2 torrey torrey 4096 May 30 18:52 .
drwxr-xr-x 5 root   root   4096 May 25 19:39 ..
torrey@twdell:~$

The beginning of my post includes the last portion of the output of your command "ls -la /mnt/sdb1".  The last of the post includes the output for "ls -la /mnt/sdb".  When I run your second command (with and without the colon), the output shows "changing ownership of" (the name of each of my songs) and ": Operation not permitted" at the end of each of my MP3s.