Some songs from my USB not available on Philips soundmachine
There are more than 511 playable audio files or 99 playable albums stored on the USB device. Manage your USB device to keep both of them meet the limit. * Some of your music songs are DRM ( Digital Rights Management) protected. The device does not support DRM-protected music songs. * The music file names do not end with mp3 or WMA. Only MP3 or WMA music songs are supported.