Audio

Movist
cocoable(Free)
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Movist: Simple and Powerful Media Player
Audio Edit Pro-Audio Editor
Xiaolei Zhang(Paid)
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Professional and Technologically Advanced Audio Editing Software
MPlayerOSX
Mplayerosx(Free)
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Versatile alternative to Windows Media Player
NoteBurner Audio Recorder
NoteBurner(Trial version)
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iTunes to MP3 converter
Mixxx
Mixxx(Free)
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Excellent free open source DJing software
RecordPad
NCH Software(Trial version)
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RecordPad: A Trial Version Audio App for Mac
MixPad Professional Audio Mixer for Mac
NCH Software(Trial version)
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A trial version app for Mac, by NCH Software.
CuteDJ - Mac DJ Software
CuteDJPro(Trial version)
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Mix Music with CuteDJ - Mac DJ Software
UMPlayer
Ori Rejwan(Free)
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UMPlayer: Play almost any audio or video file
Ultrastar Deluxe
UltraStar Deluxe(Free)
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Join in the Karaoke with Ultrastar Deluxe