diff --git a/src/3rd/js/XRWG.js b/src/3rd/js/XRWG.js
index c9c6251..c74e440 100644
--- a/src/3rd/js/XRWG.js
+++ b/src/3rd/js/XRWG.js
@@ -64,5 +64,4 @@ XRWG.generate = (opts) => {
   // sort by n
   XRWG.sort( (a,b) => a.nodes.length - b.nodes.length )
   XRWG = XRWG.reverse() // the cleankey/get functions e.g. will persist
-  console.dir(XRWG)
 }
diff --git a/src/3rd/js/three/xrf/predefinedView.js b/src/3rd/js/three/xrf/predefinedView.js
index 4d0c52a..f8adae2 100644
--- a/src/3rd/js/three/xrf/predefinedView.js
+++ b/src/3rd/js/three/xrf/predefinedView.js
@@ -72,7 +72,6 @@ xrf.frag.updatePredefinedView = (opts) => {
     let id = v.string || v.fragment
     if( id == '#' ) return
     let match = xrf.XRWG.match(id)
-    console.dir({id,match,XRWG:xrf.XRWG})
     // erase previous lines
     xrf.focusLine.lines.map( (line) => scene.remove(line) )
     xrf.focusLine.points = []
@@ -94,12 +93,7 @@ xrf.frag.updatePredefinedView = (opts) => {
 
   // if this query was triggered by an src-value, lets filter it
   const isSRC = opts.embedded && opts.embedded.fragment == 'src'
-  if( isSRC ){                             // spec : https://xrfragment.org/#src
-    console.log("filtering predefined view of src")
-    console.dir(frag)
-  }else{
-    console.log("updatePredefinedView")
-    console.dir(frag)
+  if( !isSRC ){                             // spec : https://xrfragment.org/#src
     for ( let i in frag  ) {
       let v = frag[i]
       if( v.is( xrf.XRF.PV_EXECUTE ) ){
diff --git a/src/3rd/js/three/xrf/src.js b/src/3rd/js/three/xrf/src.js
index 6c48541..1b854ab 100644
--- a/src/3rd/js/three/xrf/src.js
+++ b/src/3rd/js/three/xrf/src.js
@@ -45,7 +45,6 @@ xrf.frag.src = function(v, opts){
       let mimetype = res.headers.get('Content-type')
       if( url.replace(/#.*/,'').match(/\.(gltf|glb)$/)    ) mimetype = 'gltf'
       //if( url.match(/\.(fbx|stl|obj)$/) ) mimetype = 
-      console.log("src mimetype: "+mimetype)
       opts = { ...opts, src, frag }
       return xrf.frag.src.type[ mimetype ] ? xrf.frag.src.type[ mimetype ](url,opts) : xrf.frag.src.type.unknown(url,opts)
     })
diff --git a/src/3rd/js/three/xrf/src/audio.js b/src/3rd/js/three/xrf/src/audio.js
index 4288191..edb0a27 100644
--- a/src/3rd/js/three/xrf/src/audio.js
+++ b/src/3rd/js/three/xrf/src/audio.js
@@ -7,26 +7,49 @@
  */
 
 let loadAudio = (mimetype) => function(url,opts){
-  let {mesh} = opts
+  let {mesh,src,camera} = opts
   let {urlObj,dir,file,hash,ext} = xrf.parseUrl(url)
+  let frag = xrf.URI.parse( url )
 
-  // global audio
-  if( mesh.position.x == 0 && mesh.position.y == 0 && mesh.position.z == 0 ){
-    let audio = window.document.createElement('audio')
-    // init fallback formats
-    let fallback  = ['mp3','ogg','wav','weba','aac']
-    let addSource = (ext) => {
-      const src     = window.document.createElement('source')
-      src.setAttribute("src", url)
-      src.setAttribute("type",mimetype)
-      audio.appendChild(src)
-    }
-    fallback
-    .filter( (e) => e != ext )
-    .map( addSource )
-    document.body.appendChild(audio)
-    xrf.audio.push(audio)
+  /* WebAudio: setup context via THREEjs */
+  if( !camera.listener ){
+    camera.listener = new THREE.AudioListener();
+	  camera.add( camera.listener );
   }
+
+  let listener          = camera.listener 
+  let isPositionalAudio = !(mesh.position.x == 0 && mesh.position.y == 0 && mesh.position.z == 0)
+  const audioLoader = new THREE.AudioLoader();
+  let sound = isPositionalAudio ? new THREE.PositionalAudio(listener) : new THREE.Audio(listener)
+  audioLoader.load( url.replace(/#.*/,''), function( buffer ) {
+    sound.setBuffer( buffer );
+    sound.setLoop(true);
+    sound.setVolume(0.5);
+    sound.playXRF = (t) => {
+      if( sound.isPlaying ) sound.stop()
+      let hardcodedLoop = frag.t != undefined
+      t = hardcodedLoop ? { ...frag.t, x: t.x} : t // override with hardcoded metadata except playstate (x)
+      if( t && t.x != 0 ){
+        // *TODO* https://stackoverflow.com/questions/12484052/how-can-i-reverse-playback-in-web-audio-api-but-keep-a-forward-version-as-well 
+        sound.setPlaybackRate( Math.abs(t.x) ) // WebAudio does not support negative playback
+        // setting loop
+        sound.setLoop( t.z > 0 )
+        // apply embedded audio/video samplerate/fps or global mixer fps
+        let loopStart = hardcodedLoop ? t.y / buffer.sampleRate : t.y / xrf.model.mixer.loop.fps
+        let loopEnd   = hardcodedLoop ? t.z / buffer.sampleRate : t.z / xrf.model.mixer.loop.fps
+        let timeStart = loopStart > 0 ? loopStart : xrf.model.mixer.time
+
+        if( t.y > 0 ) sound.setLoopStart( loopStart )
+        if( t.z > 0 ) sound.setLoopEnd(   loopEnd   )
+        if( t.x != 0 ){
+          sound.offset = loopStart > 0 ? loopStart : timeStart
+          sound.play()
+        }
+      }
+    }
+    mesh.add(sound)
+    xrf.audio.push(sound)
+  });
 }
 
 let audioMimeTypes = [
@@ -39,4 +62,7 @@ let audioMimeTypes = [
 ]
 audioMimeTypes.map( (mimetype) =>  xrf.frag.src.type[ mimetype ] = loadAudio(mimetype) )
 
-// *TODO* https://www.svgrepo.com/svg/20195/play-button should trigger play?
+xrf.addEventListener('t', (opts) => {
+  let t = opts.frag.t
+  xrf.audio.map( (a) => a.playXRF(t) )
+})
diff --git a/src/3rd/js/three/xrf/t.js b/src/3rd/js/three/xrf/t.js
index 2040f66..41cf266 100644
--- a/src/3rd/js/three/xrf/t.js
+++ b/src/3rd/js/three/xrf/t.js
@@ -8,15 +8,9 @@ xrf.frag.t = function(v, opts){
   let frames    = model.animations[0].tracks[0].times.length
   let mixer     = model.mixer
   mixer.loop    = mixer.loop || {frameStart:0,frameStop:99999999,speed: 1}
-  let fps       = frames / duration 
+  mixer.loop.fps = frames / duration 
 
-  mixer.loop.speed    = v.x 
-  mixer.loop.speedAbs = Math.abs(v.x)
-  mixer.loop.frameStart = v.y || mixer.loop.frameStart
-  mixer.loop.frameStop  = v.z || mixer.loop.frameStop
-  // always recalculate time using frameStart/Stop 
-  mixer.loop.timeStart = mixer.loop.frameStart / (fps * mixer.loop.speedAbs)
-  mixer.loop.timeStop  = mixer.loop.frameStop  / (fps * mixer.loop.speedAbs)
+  xrf.frag.t.calculateLoop( v, mixer.loop, mixer.loop.fps )
   
   // update speed
   mixer.timeScale = mixer.loop.speed
@@ -26,12 +20,9 @@ xrf.frag.t = function(v, opts){
     mixer.time = Math.abs(mixer.time)
     mixer.update(0)      // (forgetting) this little buddy costed me lots of time :]
     // (re)trigger audio
-    xrf.audio.map( (a) => {
-      a.play() 
-      a.currentTime = time
-    })
   }
 
+  //if( v.x != 0 ) xrf.emit('play',v) *TODO* touchend/usergesture
   if( v.y > 0 || v.z > 0 ) updateTime( mixer.loop.timeStart )
 
   // update loop when needed 
@@ -49,3 +40,15 @@ xrf.frag.t = function(v, opts){
     mixer.update.patched = true
   }
 }
+
+xrf.frag.t.default = {x:1, y:0, z:0}
+
+xrf.frag.t.calculateLoop = (t,obj,fps) => {
+  obj.speed    = t.x 
+  obj.speedAbs = Math.abs(t.x)
+  obj.frameStart = t.y || obj.frameStart
+  obj.frameStop  = t.z || obj.frameStop
+  // always recalculate time using frameStart/Stop 
+  obj.timeStart = obj.frameStart / (fps * obj.speedAbs)
+  obj.timeStop  = obj.frameStop  / (fps * obj.speedAbs)
+}