Note: Audio does not get uploaded to www.setlisthelper.com when you sync. However, you can still easily sync your audio and share it with your devices. See the "Sharing Audio Between Devices" section below.
Open the song edit screen and use the audio picker to browse for and select an audio file.
While viewing lyrics, you can attach audio from the menu.
Use Dropbox to share audio files between devices. Import your audio files using the Dropbox integration.
The "Show Audio Player" menu option is only visible when you have a song attached and the song file is located on the device. If you sync multiple devices and do not have the audio file on the current device, the menu option will not be there.