Godot Version
4.7.2
Question
I have got music from this GameDev source, it’s .wav format of file.
But for some reason I can’t trim this audio and it showing as read-only. Is there some step I need to do to be able to unlock it and enable loop mode?
in import as is those options →
In the Import tab, Change the “Loop Mode” and reimport
It got fade out, some tip how to guess length in samples?
Personally I would use an audio editor like Tenacity to find the sample start end, as described in this blog
I tried https://tunebat.com/Analyzer which found bpm 134
knowing mix rate 48000, bars I guess 8.
divided 60/134bpm
result 1 * 48000 mix rate
result 2 * 4 beat in bar(4/4)
seem to be looping ok 
maybe bpm detector be great as func in Godot.
