Android Application/Game - DJ Scratch

I require someone to create an android application. The application will be a DJ Scratch application I require it to be simple and have a nice interface. Functionality needed is - ability to visually see a turntable turning on the screen - 5 pre set sounds (3 beats, and 2 sound effects) that can be chosen, then used as a DJ Scratch I also require another version of the same application. Main differences will be - require all the above.. PLUS - ability to 'import' any MP3/music file on their mobile device and be able to 'strach that song' - ability to play other music file while scratching the other song selected. please let me know how long you think this will take. thanks, sam