8
USB/SD Card Operation
MXR42 OPERATION
Thefollowingtypesoffilesarecompatible:
•MP3data
•WMAdata
Thefollowingtypesoffilesarenotcompatible:
•WMAfilesthatareprotectedbyDRM(DigitalRights 
 Management).
•WMAlosslessformat
•MP3PROformat
•MP3playlists
•WAVformat
MP3/WMAplaybacksequenceisbasedonorderthefiles
arecopiedtotheUSB/SDcarddeviceandbeginsinthe
root folder. Any empty folders or folders that do not include
MP3/WMAfilesareskipped.Dependingonyoursoftware,
theplaybackordermayvary.Filesintherootdirectoryare
located in Folder 1.
•Maximumnumberoffiles:65535
•Maximumnumberoffolders:65535
•Maximumnumberoffilesineachfolder:65535
•Maximumnumberoffolderlevels(subfolders):7
Note: If the number of files/folders exceeds the maximum
outlinedabove,theadditionalfiles/folderswillbeignored.
USBandSDcarddevicecapacitylimit:<16gigabytes.
Anydevicesgreaterthan16gigabyesarenotcompatible.
Due to the differences of USB and SD card devices, some
devices may not be compatible. Devices must be ‘mass
storageclass’andformattedtotheFATorFAT32filesystem
in order to ensure compatibility.
8kHz~48kHz
8kHz~48kHz
32kbps~320kbpsconstant
Variable bit rates
32kbps~384kbpsconstant
Variable bit rates
Note: Some files may not play or be displayed correctly,
dependingonsamplingratesandbitrates.
Media Compatibility
Playback Order
Playback Capacity
Device Compatibility
Sampling Frequency Rates
MP3
WMA
Transfer Bit Rates
MP3
WMA