created semaphore for queue and mutex for pause

Makefile

@@ -13,6 +13,9 @@ install: all
 	SUBDIR=`racket -e "(display (format \"~a-~a\" (system-type 'os*) (system-type 'arch)))"`; \
 	FILES=`ls build/*.dll` 2>/dev/null; if [ "$$FILES" != "" ]; then cp $$FILES lib/$$SUBDIR; fi
 
+test: install
+	cp lib/linux-x86_64/*.so ~/.local/share/racket/racket-sound-lib/linux-x86_64
+
 zip: install
 	SUBDIR=`racket -e "(display (format \"~a-~a\" (system-type 'os*) (system-type 'arch)))"`; \
 	(cd lib; zip -y -r -9 $$SUBDIR.zip $$SUBDIR)