MIT App Inventor Using ActivityStarter

*** Please read carefully before bidding *** I am looking for someone who can explain or send me the (*.aia) file from MIT App Inventor for the following: 1. I have an audio file located somewhere on the web. What I want is when clicking on a button, the audio plays on the default android audio player without leaving the app. Please be informed that I do not want to use the built-in App Inventor audio player. You may use ActivityStarter for this. Also when clicking again on the same button, the audio stops playing (or pauses). 2. Probably you need to use the ActivityStarter of this part. While a song is playing, I need, when clicking a button, another app starts to detect the song using any of the song detector apps that are there (such as shazam and Sound Search for Google Play) 3. Tell me if it is possible to implement music identification system within the app using one of the open source systems like [login to view URL] This is NOT a full project rather than just explaining how to do the above. I am not asking to do a full app. Just a very simple app to show how it works. Thank you