Audio cues are trimmed sometimes with JACK

[moonshaadow]

Describe the bug
I have noticed that sometimes the attack of some audio cues are trimmed.
The behavior happens when the cue is manually triggered.

To Reproduce
Steps to reproduce the behavior:

1. create a media cue. To easily hear the behavior, choose a very short audio file, with audio starting at the very beginning of the file.
2. If this is not default behavior, choose JACK output for this cue.
3. manually trigger the cue, many times until you hear the behavior. You should notice cut attack, sometimes.
   .
   Expected behavior
   Audio cue be played entirely, from the very beginning of the file.

Linux Show Player version:

• [last from Github, installed with poetry]

OS Version

• [Mint 21.33]

Additional context
This is not happening with pure ALSA instead of JACK. So maybe it could happen because of the refreshing of JACK connections at each trig.
This is not happening when we loop the cue.

[FrancescoCeruti]

So maybe it could happen because of the refreshing of JACK connections at each trig.

Very likely, currently the connection happens asynchronously, we need to block the playback while connecting