About a month ago we interviewed mashup artist Girl Talk, who has received a lot of positive attention lately for the way his albums, Night Ripper and Feed the Animals, combine samples of a gazillion pop songs to create his own booty shaking mix of socio-emotional commentary. But this way of creating music has landed Gregg Gillis in the courtroom and in Senate committee hearings, as well as in sold out sweaty venues. Mark Hosler…