Random Silence in Random Playhead Mode

First of all, great work on the latest update!

The UI and overall workflow feel significantly improved!

I noticed a bug with the new Random Playhead mode: roughly half of the triggered slices play silently instead of producing audio. The slices are triggered visually, but no sound is played.

Also, it would be very useful to have manual slice trimming/editing after slices are generated using the auto-sensitivity detection workflow.