Avisynth: How joining two clips with overlay audio clip1 over clip2?

[marclli]

I have a several clips, with audio. Some videos I just want to join with AlignedSpliced (++), but i have one problem with other one.
I try to explain:
Audio from clip1 continues after scene plane change. So, I want to join the two videos (only video) at the scene change, but the audio of clip1 remains 3-4 frames, and then fade with the next audio.
Graphically: +++++ is video1 %%%% is audio1 -------video2 &&&&& audio2 ----> then i want

+++++++++------------- (video1+2)
%%%%%%%&&&&&& (audio1+2)
there is a little difference of time in the moment of fadeout

I already tried
#Dissolve(Trim(0,1255), Trim(2600,7300),25)
#V1++W2++V2++V22++V3++V4a++V5++V6a++V7++V8++V9++V1 0++V11++V12++V13++V14++V15++V16++V17(AlignedSplice )
#++TxPlus_Slide(V3, V4, 0.25, 7, true)++TxPlus_Slide(V41, V5, 0.25, 7, true)++V55++V6 (plugin transition Txplus)

Thanks in advance. Good Job!!

[Attachment 61325 - Click to enlarge]