How I can made a program who interface a pic or avr with the usb port , so I can send data and sound (analog sound), do I need to create a driver , with which program a can control the USB , how I get access to the usb .
Try FT232BM from FTDI. Cheap and easy to use.
You can acces the device with free dll or as VCM (virtual com port)
In the web you can find example programs for Builder and Delphi www.ftdichip.com