Speed Change Music Player

May 2, 2019

ver. 1.4.1: add setting of auto-playing after seeking (a user's request) and fix a bug of playing in the background on Android 8.0 Oreo and higher.
ver. 1.3.21: a bug fix of opening music files from outside of the app on Android 8.0 Oreo and higher
ver. 1.3.18: add explanation of playing in the background (a user's request)
ver. 1.3.16: add a feature of quick access to change volume balance (a user's request)(check manual -> pitch・place・equalizer -> the last page)