You stop recording when the MP3 or WMA file you want to record is still playing. > Always stop recording only when the playback of MP3 or WMA file is wholly completed. * The memory of the USB device runs out before you start recording. > Remove some unwanted music tracks to free some memory, or use another USB device to start recording. * The name of a MP3 or WMA file on the disc is identical to the one of a file on the USB device. >* Rename the name of the file in the USB device before start recording.