I usually pick one audio track and record a few seconds of silence at the end of the song.
Then the song tends to play thru and let the effects continue working until that track ends.

In my mind the program hits the End Of File message and everything shuts off .. so simply extending the EOF has worked for me here.

It lets delay/reverb and other time based effects empty their buffer from the last not played.

I do not work here, but the benefits are still awesome
Make your sound your own!