code: public synchronized Tuner getTuner(int i){
  		checkReleased();
  		for(Tuner t: tuners)
  			if(t.getIndex()==i)
  				return t;
  		
  		throw new ArrayIndexOutOfBoundsException("No tuner with such index");
  	}
docs: This method returns a tuner given its index.
  @return the tuner matching the given index, null otherwise
  @throws StateException if this tuner list has been released and must not
  be used anymore
  @throws ArrayIndexOutOfBoundsException if the given index is out of bounds