Power WMA Recorder 

Power WMA Recorder is a program that can record WMA from any available sound source directly without costing any other disk space.
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Audio Record Expert 

Record all sound going through the sound card on the fly into MP3, WMA, WAV, OGG, MP4, VOX, AU, AIFF format. Support silence detection (Voice Activity Detection). Split audio automatically while recording based on time or silence detection
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