Repeat Player is the perfect companion for learning a new language as you can use it to play, rewind, and jump to different parts of an audio file.

It supports different audio file formats, including mp3, .mp4, .3gp, .flac, .mid, .xmf, .mxmf, .rtttl, .rtx, .ota, .imy, .ogg, and .wav so you don't need to worry about having to convert files when playing. It's also filled with features that make listening to music more intuitive, such as sorting playlists, browsing files within folders, changing playback speed, setting a sleep timer, and more.

You can also use this app as a music player.