length expanded size cdr WAVE problems fmt ratio filename 7:44.35 81931964 B --- -- ---xx flac 0.4142 sb-jc2003-12-19.fm.t01.flac 6:38.66 70362476 B --- -- ---xx flac 0.4168 sb-jc2003-12-19.fm.t02.flac 7:57.64 84293372 B --- -- ---xx flac 0.3864 sb-jc2003-12-19.fm.t03.flac 4:24.67 46727228 B --- -- ---xx flac 0.4193 sb-jc2003-12-19.fm.t04.flac 26:46.07 283315040 B 0.4074 (4 files) App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned