Await of unmute() blocks the program

[rodion-m]

If we call unmute() method using await feature, it'll just block a program execution:

  void _load(String asset) async {
    await f.unmute(); // <--- HERE IS A BLOCKING METHOD
    //So, this code will not be executed:
    ByteData _byte = await rootBundle.load(asset);
    await f.prepare(sf2: _byte);
  }

[Ryan4CN]

I encountered the same problem.

[mdccxv]

This is caused by Android platform channel not returning any results.
I have submitted a PR that addresses this issue.
#28

[rodydavis]

Thanks! I'll try to get this out soon. I'm also work on the next version that uses FFI to be faster and cut down on bugs too