Volume is too low. Adjust the sound volume to be audible.
Disc contains non-audio files. Replace with another disc.
The system is in pause, slow motion or fast forward/reverse mode. Press to resume playback.
A wrong audio file . Make sure the MP3-CD was recorded within 32- 256 kbps bit rate with sampling frequencies at 48 kHz, 44.1 kHz or 32 kHz.