PG could add these in to the .di data file Biab makes, this is default fade size .010 ms, try whatever works the best.
<ITEM
POSITION 4.01291666666667
SNAPOFFS 0
LENGTH 2.0125
BEAT 1
SOFFS 158.012916666667
PLAYRATE 1 1 -2 -1 0 0.0025
<SOURCE VIDEO
FILE "E:\bb\RealTracks\Bass, Electric, BritInvasion Ev 120\BS1681.wav"
>
FADEIN 1 0 0 1 0 0 0
FADEOUT 1 0 0 1 0 0
>
Don't forget to add the stretch markers also so it will fit any varying tempo map, you will need to work them out.
You need to add: IMPLIEDWARP 1
with the stretch markers
the stretch marker fade amount is best @ 0.0 as you don't get any clicks or glitches
PLAYRATE 1 1 2 -1 0
0this is the default stretch marker fade amount @2.5
PLAYRATE 1 1 2 -1 0
0.0025 <ITEM
POSITION 4.01291666666667
SNAPOFFS 0
LENGTH 2.0125
IMPLIEDWARP 1
BEAT 1
SOFFS 158.012916666667
PLAYRATE 1 1 -2 -1 0 0
<SOURCE VIDEO
FILE "E:\bb\RealTracks\Bass, Electric, BritInvasion Ev 120\BS1681.wav"
>
FADEIN 1 0 0 1 0 0 0
FADEOUT 1 0 0 1 0 0
SM 0 200.0575 0 1 0 + 1.986666667 202.044166667 0 1 3.973333333
>