Thanks for reporting, these issues will be addressed in the future releases.

@jubrand:
we will look into the song speeding bug. And in settings you have 'Enable backgruond mode' for media Player, using it - you can use other applications and still the player will work fine. If that is disabled, when your application is not in foreground (ie you close using the close menu option) the player will be stopped.

@el73:
We will look into this issue - we have simulated all time with some items on the playlist, thanks for reporting.

Regards,
Dollars5