Ableton Keeps Audio Popping

[Stolenlogic]

I don't understand. I have two problems at the moment.

1.) When I stop playing Alchemy Synth in Ableton, certain instruments keep playing after I have stopped the song. All other audio is dead.
It's strange


2.) The audio tracks that I import keep popping. They are at very low DB and I just don't get it.

[stoersignal]

1.) have you checked the release of the amplitude?

[CooCooCaCha]

This is why I consider an Oscilloscope essential to music production. I've had similar problems with various plugins in the past and a good oscilloscope will show audio pops and glitches clear as day.