The new version is distributed through the Galaxy Store
http://apps.samsung.com/appquery/appDetail.as?appId=com.samsung.android.soundassistant


SoundAssistant
The sound utility available on the galaxy series
Provides various convenience functions related to audio
- Allow you to control the media volume instead of ringtone when pressing the volume keys
- Support individual application volume (You can control the volume of music and games differently)
- 150 steps of fine volume and support Floating Equalizer(EQ)
- Create and activate personalize sound settings
- Support mono audio and left/right balance
- Touch the app volume icon in the floating dialog to play/pause and long click to enter the app.

The following features are available only if the Samsung Experience version of the smartphone on which Sound Assistant is installed is 8.5 or later.
※ How to check Samsung Experience Version : Run SoundAssistant - Top right menu - About
- Default volume step when pressing volume button can now be changed
- Audio…