[Playback][Timeline/Editing] Imported audio do not play back and have a blank waveform preview

[my-opencode]

Commit Hashes
f7e1bff
617ff87

Platform
Ubuntu 22.04.4 LTS 64bits
Ubuntu 24.04 LTS 64bits

Versions
AppImage Olive 0.2.0-f7e1bff0
AppImage Olive 0.2.0-617ff876

Summary

Audio files added to a sequence (drag and drop or with the record tool) have a blank waveform preview and do not play back.
Volume must be changed in the node parameters to get a preview and playback.

How is this a behavior issue?

Added audio files should play.
The fix requires to edit the volume value after import.

Expected Behavior / Fix

• Expecting audio tracks to play back after import.

Steps to reproduce

1. Open a new sequence.
2. A - recording
   a. Select the Record Tool.
   b. Select a free space on an audio track on the timeline.
   c. Press the flashing red Play button in the Sequence Viewer window.
   d. Record an audio.
   e. Press stop to end recording.
   f. Select the Pointer Tool.
3. B - importing
   a. Import an audio file to a sequence track
4. Notice that the audio track is blank in the sequence editor (no waveform preview)
5. Play back ( no audio)
6. Click the audio track and open the Parameter Editor window.
7. Change the value of volume is set to a value above 0.
8. Play back (now with audio)

Additional Information / Output

[Edit: fixed styling]
[Edit2: updated bug info after collecting more information]

[my-opencode]

This behavior is strange and persistent in the newer release Olive 0.2.0-617ff876

Importing any audio file to a sequence turns out silent, with a blank waveform preview.

I have to input a positive volume value to get Olive to play it and update the waveform preview.
Then, switching back to 0db still plays audio and negative db values properly reduce the volume.