Audacity

First you will create a commercial off of audacity which has to be up to 30 seconds long.

media type="file" key="ryan nelson 15 sec.wav" width="300" height="50"

Finally you will be creating a commercial that has to be a minute long, just be ready for many retakes if you want perfection.

media type="file" key="Tanner and Ryan's 1 min school event.wav" width="300" height="50"

Heres some music I downloaded off of soundzabound

media type="file" key="romantic.mp3" width="240" height="20"

media type="file" key="04d._Soundzabound_Volume_2_Disc_2_Air_on_the_G_String__(Bach).mp3" width="240" height="20"

media type="file" key="46.__Soundzabound_Volume_3_Disc_2_Grooveloop_3.mp3" width="240" height="20"