If you cant find a place to stay in Mildura, try some of the surrounding towns like Red Cliffs, Merbin and Irymple. All the cheap spots in Mildura seem to be booked due to the country music festival, but bargains can still be found. Due to the clash of the two events, I'm hoping I am not driving the final to the background music of "rhinestone cowboy"!!
Cheers
Matt