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Audio Kit

Official Description

+ Totally free, no ads.
+ Simple, powerful, accurate, fast Audio (Sound) Editing.
+ Advanced Audio trimmer.
+ Supports all major audio formats: Mp3, Wav, Ogg, WMA
audio type, for example from WAV to MP3, MP3 to WMA, WMA to OGG and more.
+ Transcoding works on the background.
+ Share support (Whatsapp, SoundCloud, Gmail, etc).