MaruAudio is a powerful music player but also a great repetition tool to help learn new languages such as English Chinese etc.
This app is very useful for listening to audiobooks.

[Key Features]
♬ Supported Audio formats : MP3 MP4 FLAC OGG WAV 3GP etc.
♬ Show folder hierarchy like in a file manager.
♬ Repeat A<->B
♬ Bookmarks.
♬ Supported clouds / network for music streaming
- Supported Google Drive MS OneDrive
- Supported Local Network (SMB CIFS)
- Supported FTP / FTPS / SFTP
- Supported WebDAV

♬ Supports dark mode that reduces eye strain.
♬ Speed control from 50% to 200% (pitch adjusted)
♬ Sleep timer

♬ Support Lyrics.
- External lyrics file (.lrc) : also support with cloud network files
- Embedded synchronized lyrics (SYLT tag)
- Embedded unsynchronized lyrics (USLT LYRICS tag)

♬ Browser and play music by artists albums songs playlists and folders
♬ Simple and easy playback music management function
♬ Play songs in shuffle order or loop.
♬ Easily search songs by keywords.