skeleton of IPC mechanism to allow playback control with cmdline flags

backend/ipc/conn_other.go

@@ -0,0 +1,14 @@
+//go:build !windows
+
+package ipc
+
+import "net"
+
+func Dial() (net.Conn, error) {
+	// TODO - use XDG runtime dir, also handle portable mode
+	return net.Dial("unix", "/tmp/supersonic.sock")
+}
+
+func Listen() (net.Listener, error) {
+	return net.Listen("unix", "/tmp/supersonic.sock")
+}