We need andorid app source

*********we need developed app full source with functions as follows

For use in TV box, which has all the needs that a karaoke needs, I'm available for more information.
I'm with a partner trying to develop our karaoke machine, I'm the part that knows the least.
We need to develop a karaoke app for android to run on tv box. An mp4, avi cd+g and mp3 player. with professional karaoke features, such as key (key), punctuation, reservation of songs, pause, play, stop, cancel, etc. It also needs to have screen rest, demo (random clips). Mainly playing cd+g files and having the files encrypted. I have a similar product for demo.

- Is it possible to put background in high definition on the cdg that runs? Is credit system possible?
we will use it for use on MACHINE KARAOKÊ PLAYER machines we need to know about COIN.
The machine can be used for home use in the free player function or it can be used in machines (karaoke player machine)
with coin mode, the letter P of a keyboard being programmed to give COINs

- This same player is possible to make an identical version for linux, is the programming platform the same?

important: every file must be encrypted.
how does the file storage and execution system work? by code?

1 - Will the APP be able to have a standard karaoke interface, with 6 digits (000000) on the screen to put the song code and have a video (AVI) in the background?
2 - Will the same APP be made for platforms: ANDROID, LINUX and WINDOWS (XP, 07, 10)?
3 - Can the APP be used on the STREAM platform, with the songs in m PROVIDER or IN THE CLOUD?
4 - In the case of working OFF LINE, the app could have its database in SSD or HD, it would read up to how many GB?
5 - Does the app come with a SONG LIST editor to catalog the songs in its database?
6 - Will this song list editor accept EXCEL listing?
7 - Will the app accept the formats: CD+G / MIDI+TEXT / MP4 / AVI?
8 - Can all file formats be encrypted?
9 - In the case of the CDG that has low resolution, can the APP change the resolution to a minimum of 1024x768 and change the BACKGROUNDS of the CDGs and MIDIS?
10 - Can the APP customize the CDG and MIDI using its own preset of TEXT, BACKGROUND, SOURCE, Amount of LINES, colors and THEMES?
11 - Will the APP for professional use have coin counters?
12 - Who makes the arts (Background, opening)?
13 - Do you make the stream interface?
14 - I would like the app interface (appearance) of the APP to be like this: https://www.youtube.com/watch?v=CJMJ-QzN4hw&t=110s
15 - The program must have: Coin / Pause / KEY (tone) / Time (time) / Pause / Reserve / Back Music / Score (Score) / Coin counters / Play demo (Plays clips when no one is singing)
16 - In the case of system UPGRADE (APP), how does it work?
17 - What is: "OFFER NDA"?
18 - What is: "Integrated API for APP"?
19 - How would I insert the APP into the TV Box or raspberry, would it be via USB?
20 - Is it possible that the program has the option of automatic startup on any of the platforms (Android / Linux / Windows)?