Greetings,
I have read Project Description & our team already developed few WordPress Plugins, one audio related website, so we do have prior experience working on similar WordPress plugins.
For now, we have given you our ballpark estimated Man-Hours but once you drop me a message thru' PMB, we can then start our conversation and finalize the deal.
Look forward to hearing from you and talking to you further thru' Freelancer private message board.
Regards,
YK
LEADconcept