Vocal Extractor funktioniert nicht

- Generated vocal and backing(Karaoke) tracks can be saved to files and exported to iCloud, Dropbox, Google Drive and etc. - You can import mp3,m4a,wav format music files from iCloud,Dropbox,Google Drive and etc. as source music.  Therefore you can import your live recording files recorded by other applications to this app and you will be able to remove or extract vocal from those recordings. *1. *2 .  If you want to save outputs to files externally, we recommend to confirm the quality of vocal separation and then consider to purchase this option.  Choose a file and tap Export menu on the navigation bar, the document providers screen will appear.  The name of saved files will be “original file name without suffix”+ “_vocal. m4a” and “_backing. m4a”.  Saved output files will be sampling rate 44. 1KHz m4a or wav monaural or stereo format.  After successfully importing the file, Tap File button, you will find the file you have just imported on the list of files. 9.  In order to export output files from the app container, tap Export button.  If you want to load them, place them on iCloud, Dropbox, Google Drive or other document providers configured on your iPhone.  The sampling rate and the format of output files are 44. 1KHz m4a or wav. 6.  Your m4a, mp3 and wav format music files can also be used on this app as source data.  Tap Vocal Extract button located in the center of the main screen.  Import and Export functions can only work with the document providers which successfully configured on your device.  If you tap one of those buttons at the first time, in-App purchase screen will show up.  Then tap Import button to import the file to the container in this app. 8.  Instead of that, you will be able to save files after save confirmation pop-up is displayed. 5.