Please improve a few things

1. App makes background music less loud, and voice instructions are just shouting this way! ) I listen to an internet radio usually so please fix.
2. No possibility to play video instructions separately. I have to view them, then go back on the previous step and then step forward again. Very inconvenient...

illi4 about 7 Minute Workout - Beginner to Advanced High Intensity Interval Training (HIIT), v1.6.1