I am trying to use minim 2.1.0 beta as I want to use some of the new features. I seem to be coming up on a stumbling block. Many of the examples included in the distribution work, but many others do not and I get a similar error. For instance, any of the AudioEffect examples will generate the error below. This seems to hold true for any examples that use the addEffect method. 

Question - is this a known problem or is it just me. If it is a bug, if I pull the code off of git will this fix it? If so, any hints on compiling ? Sorry experiences, programer, novice at java and just wanting to save time trying to get correct usage of javac.