Editing audio tracks with Pinnacle Studio 14

[Happichap]

I am trying to join 2 audio tracks end to end. This is necessary because I have trimmed the end of the first track and the start of the second to give continuity to my background music. How do I close the gap between them ?

I have tried several options but so far not the correct one !!

[Midnight Blue]

What software are you using ?