AudioScrub (REMIX Edition) funktioniert nicht

It can change the speed (without changing the pitch), put the music in a comfortable range, loop parts of a song, display a waveform, and rewind or fast forward like a tape player.  Use your ears to learn jazz solos, fiddle tunes, math rock, indigenous music, classical pieces, Lady Gaga… Whatever grooves you, this app will help you develop your listening ability.  AudioScrub (REMIX Edition) is a musical assistant that helps you learn to play your favourite songs.  Use the trainer module to learn a section of music by cycling through different keys, automatically or manually.  A fluid, scrollable waveform allows you to quickly and visually access different areas of the song.  Say goodbye to accidentally pressing the 'rewind' button and losing your place in the song.  Whether it's too fast, slow, high, or low, the speed and pitch modules can adapt the music to your preference.  You probably want to go back 'just a bit', so that's what the rewind button does: tap to jump back two seconds; hold to seek backwards.  You can finally see all of the musical metadata without truncation, including the title, artist, album, composer, and release date.  To save time, you can set a loop to the correct number of bars and then just shift to the left or right.  Create a loop and set in and out points by tapping the buttons or dragging the sliders.  This lets you practice in musical sections without re-creating the same loop several times.  Five transposition schemes give you a variety of approaches depending on the music.  You can play, pause, and rewind without looking at the screen.  I have all of the songs we play on my iPod […] I load it up on this bad boy and work it out until I land it.  No need to pinch and zoom to go back and forth between large and small scales because both are visible simultaneously.