music-player: Playback countdown is excessively rapid

[helitopia]

The seconds countdown in noticeably quicker than actual flow of time, which is confusing.

Such behavior is due to rounding of the seconds during event triggering

Needs to be corrected so that seconds are updated with a narrower range of event values

[helitopia]

+ should fix the issue of Current/Remaining playback time not adding up to total duration