Check the EDGE NQ can play back the file type you are trying to access Supported file types: ALAC, WAV, FLAC, AIFF, DSF, and DFF containing DSD64 at 2.8224 MHz or DSD128 at 5.6448 MHz, WMA, MP3, AAC, HE AAC, AAC+ and OGG Vorbis.
Make sure that you are using non-DRM files For USB Media the EDGE NQ can only play non-DRM files. Files that have DRM controls cannot be played.
Check your device is formatted in FAT32/NTFS format
Make sure to organize your internal database The way you organise your USB media affects the size of internal database the EDGE NQ needs to build dynamically as you browse content. It is good practice to create folders for Artists within which you should have a sub folder for each Album which then containing the tracks for that Album. Libraries with thousands of tracks in one folder will progressively slow down the EDGE NQ’s media browsing.