created FluidFilesPath and a test file

release-packaging/Classes/FluidFilesPath.sc

@@ -0,0 +1,5 @@
+FluidFilesPath {
+	*new {
+		^"%/../AudioFiles/".format(File.realpath(FluidDataSet.class.filenameSymbol).dirname);
+	}
+}

test/FluidFilesPath_test.scd

@@ -0,0 +1,12 @@
+(
+s.waitForBoot{
+	Routine{
+		var path = FluidFilesPath()++"Nicol-LoopE-M.wav";
+		var buf = Buffer.read(s,path);
+
+		s.sync;
+
+		buf.play;
+	}.play;
+}
+)