How Do I Keep This Note Going?

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I know this thread has an awkward title, but I don't really know how else to word my question.
Basically there's this sample that I like in LMMS. I want to extent the notes playing this sample to make them play for a long time. But, at a certain point, the sound fades into silence.
What do I need to do, to make the noise continue for the duration of the note I place?
Let me know if I need to reword my question.
The name of the sample is heaven_strings.01.ogg
Here's a link to the screenshot that shows you where to find it in LMMS:
https://imgur.com/N4FreFX
You'll see the sample I'm talking about at the bottom of the image.

Please and thank you!
Since it has a fade in and out you can't do it perfectly. All you can really do is in AudioFileProcessor switch on looping and drag the start and end points (white lines) to try to find a satisfactory sustained sound.

Steve
Alternative solution to "extend" the duration of a note beyond the duration of the sample :

1) Activate the volume envelope (AMT = 1), with:
- ATT = 0.2 (value to be adjusted)
- HOLD = 0
- DEC = 0
- SUST = 1
- REL = 0.2 (value to be adjusted)

2) In the Piano-Roll, the idea is to overlay the notes: a note will start playing a little before the end of the previous note. You just have to find the right place to overlay the note.