I was suffering from the same issue in OSX Catalina.
Log extract: [19-10-25 15:11:18.8275] Slim::Player::Protocols::File::open (102) Error: could not open /Volumes/Media/Boston/Boston - Greatest Hits/14.A Man I'll Never Be.mp3: *Operation not permitted* [19-10-25 15:11:18.8275] Slim::Player::Song::open (472) Warning: stream failed to open [file:///Volumes/Media/Boston/Boston%20-%20Greatest%20Hits/14.A%20Man%20I%27ll%20Never%20Be.mp3]. [19-10-25 15:11:18.8301] Slim::Player::Protocols::File::open (102) Error: could not open /Volumes/Media/Boston/Boston - Greatest Hits/15.The Star Spangled Banner - 4Th Of July Reprise.mp3: Operation not permitted [19-10-25 15:11:18.8302] Slim::Player::Song::open (472) Warning: stream failed to open [file:///Volumes/Media/Boston/Boston%20-%20Greatest%20Hits/15.The%20Star%20Spangled%20Banner%20-%204Th%20Of%20July%20Reprise.mp3]. [19-10-25 15:11:18.8327] Slim::Player::Protocols::File::open (102) Error: could not open /Volumes/Media/Boston/Boston - Greatest Hits/16.Higher Power (Kalodner Edit).mp3: Operation not permitted [19-10-25 15:11:18.8328] Slim::Player::Song::open (472) Warning: stream failed to open [file:///Volumes/Media/Boston/Boston%20-%20Greatest%20Hits/16.Higher%20Power%20(Kalodner%20Edit).mp3]. [19-10-25 15:11:24.0243] Slim::Player::Protocols::File::open (102) Error: could not open /Volumes/Media/Boston/Boston - Greatest Hits/16.Higher Power (Kalodner Edit).mp3: Operation not permitted [19-10-25 15:11:24.0244] Slim::Player::Song::open (472) Warning: stream failed to open [file:///Volumes/Media/Boston/Boston%20-%20Greatest%20Hits/16.Higher%20Power%20(Kalodner%20Edit).mp3]. I resolved this by allowing full disk access to Perl - all good for all Music (ex-iTunes) tracks now :) Just sharing in case anyone else is suffering from this annoyance. Bob Logitech Squeezebox Boom x 3 Apple Freak: iMac Core II Duo, MacBook Pro, Airport Extreme x 2, Airport Express x 2, iPod Classic, iPod Touch (STOLEN by Qantas staff!), iPhone , iPad version 1 ------------------------------------------------------------------------ MrBrillo's Profile: http://forums.slimdevices.com/member.php?userid=29831 View this thread: http://forums.slimdevices.com/showthread.php?t=108796 _______________________________________________ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss