An audio file such as an MP3 or WAV file can be linked to each song and played by Digital Fake Book. Note that the files are not stored in the Digital Fake Book database, but are only referenced. This means that if you move, rename or delete an audio file, Digital Fake Book will no longer be able to find it and you will need to re-link it.
I recommended that you copy all the audio files you want to use with Digital Fake Book to a common folder. In the portable version, this should be a folder called Audio inside the dfb folder, as Digital Fake Book knows to look there if it can't find a file in it's original location.
To play or pause the file, click the play/pause button or press Ctrl+2.
The return to start button (or Ctrl+1) resets the song to the beginning. You can also skip to any part of the song by clicking on the red current time bar at the bottom left of the main window.
Clicking the volume button will allow you to set the playback volume of audio files.
To link an audio file to a song, click the MP3 button and choose the file you want to link.
To clear a song, right-click the MP3 button and select Clear File from the pop-up menu.
Digital Fake Book includes an A/B loop mode to repeat a section of an audio file. This is helpful when learning a song by ear as it allows continuous looping of a phase. To set the loop points just click the A/B button (or press Ctrl+A) once at the start of the phrase and again at the end. The song will start looping. To clear the selection, click the A/B Clear button or press Ctrl+L.
Digital Fake Book is able to transpose audio files to allow you to play along in a different key to the original recording.
File playback can be transposed (pitch shifted) by up to 11 semitones sharp or flat by selecting Audio Playback Transpose from the Options menu. This setting is saved with each song.
NOTE: This function does not work on all file types, and may fail to work at all on some systems, depending on the CPU instruction set available.
Audio file playback can be controlled by a footswitch connected to a COM port. There are 2 modes available from the Options menu; Start/Pause and Start/Reset. Start/Pause will start playback on the first press of the foot switch and then pause/resume on subsequent presses. Start/Reset will start playback on the first press of the footswitch and stop and reset back to the beginning on the next press.