how to append same audio(mp3) second time on to video ???

[judy85805]

I just tried to ADD ((APPEND audio 2ND TIME) audio BUT avidemux COME UP "ERROR" -some tracks are used multiple times - ANY WAY AROUND THIS ?

Frame 0:24  -  https://www.youtube.com/watch?v=77n7ImseoZo

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- shows a different Version than mine - Im using lates - version- 2.8.2 ,
 the photo I like to know what Version this is from


My avidemux Looks like this
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