Hi!
I'm interested in your karaoke project. I have a masters in computer science by the ITESM here in Mexico and have been developing software for over 15 years, at first in companies and then as freelancer.
I have worked in projects more complex than this one, as you can see on my profile. My customers have been pleased with my deliveries and have looked for me when they have needed new projects.
For what platform will this be?
I suggest two milestones, each 50%. I ask the first one to be released at the middle of the project, once you've verified everything goes as expected and one at the end, once the project has been completed and fully verified. If you would like another scheme, I'm open to suggestions and negotiation.
I put great care in my projects and my code is guaranteed, so in the unlikely event that you happen to find any problem in the software, I'll fix it immediately, even after the project has been completed (I care about having happy customers who return for more projects).
Looking forward to working with you,
Guillermo Romero