Try these solutions:
1. Ensure that you are not attempting to access the contents of your USB drive via the ‘USB Audio’ input
The contents of a USB stick can only be browsed via the 'Library' section of the StreamMagic app.
USB Audio is used when connecting a Mac or PC directly to the USB Audio input on the player.
2. Check that the Network Player can play back the file type you are trying to access
WMA, AAC, HE AAC, AAC+, MP3, OGG Vorbis, FLAC, WAV, ALAC, AIFF can currently be played.
3. Make sure the files are non-DRM
This Network Player can only play non-DRM files. Files that have DRM controls cannot be played.
4. Check that your device does not require more than 1A if it is powered from the USB socket itself
5. Check your device is formatted in FAT32/NTFS/exFAT/Ext4 format
6. Make sure to have good database management
The way you organize your USB media affects the size of the internal database the Network Player needs to build dynamically as you browse content.
It is good practice to create folders for Artists, within which should be a sub-folder for each album containing the tracks for that album. Libraries with thousands of tracks in one folder will progressively slow down the Player's media browsing.