A few things to note if you want to playback songs without delay.
1. All songs should have same sample rate, bit depth and the number of channels.
2. All the songs should be placed in a playlist with “no delay” option.
3. No midi file should be associated with the multitrack song
Multitrack songs (not in playlist) are always played in “Single Mode”. In this case the next song is not preloaded while the current song is being played.
In a playlist though, the next song is preloaded while a song is being played, if the parameters mentioned above are met.
Hope this helps.