Question

While playing would be good 

Answer 1

Waveform display (with playhead) in browser player

Answer 2

Electronic musicians spend a lot of time searching for samples in electronic sample libraries.
It is very important to have a good browser. For example, like in bitwig, ripper, or loopcloud.

I'm missing three features
- Waveform
- Pitch change
- Detach and move to another monitor