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*** Known bugs                                                      ***
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- looping isn't working very well (loop, loop_start and loop_end 
  commands in interactive mode) 
- RIFF WAVE files
	- doesn't preserve all RIFF-blocks
- controller sources
	- too big buffers cause problems; for instance 
	  there's distortion when using sine-oscillator 
  	  with big buffersizes
