It will be good to have the next new tests which can be added to the functional or regression workspaces:
 - The custom plug-ins for already supported audio files should be handled properly when located as a file in class path, separate jar or module. For example our jdk support wav, aiff, au, midi files. But the user should be able to override standard provieders(AudioFileReader/AudioFileWriters) etc. The issue is related to the order of classes returned by ServiceProvider.
 - The widely known providers should be supported as a class file, jar or separate module . Some examples is (https://github.com/pdudits/soundlibs).

The full list of providers: MidiDeviceProvider,MidiFileReader,MidiFileWriter,SoundbankReader,AudioFileReader,AudioFileWriter,FormatConversionProvider,MixerProvider.