MinimStreamer configs and license

[simoncn]

The intention of this option is to permit the use of FFmpeg filters (for purposes such as convolving) even when there is no frequency resampling. MinimServer automatically uses FFmpeg when there is frequency resampling.

If there is no need to use filters and there is no resampling to change the sample rate, there is an advantage in not using the ; because this makes seeking within a track faster.