I read on the sweep site :
Extreme ease of use:
Precise, interactive scrubbing
Multichannel file support: Sweep provides complete editing and processing for multichannel sound files.
Personnaly I am working on multichannels audio files. Sweep seems an interesting choice for editing, but surprisingly isn't able to edit one track when a four tracks work for example. Or may be I don't know how to ?
How is it possible to do that or when sweep will be able to do editing on a selected channel / multichannel work ?