hey everybody, this is my first post on here. i am an amateur home recorder, for lack of better terminology. i use garageband and i just bought a Behringer 1204usb. i have the basics down on recording to garageband. i am just curious as to mixing a song with it. i am using an instrumental in .wav or .mp3 format and the vocals are added to them. is there a way to use the mixer to adjust the EQ's after the song is complete? i apologize in advance if there is a help thread on this, i couldnt find anything with the search function or on google/youtube to help me figure this out.