okay so i brought pro tools 9
Where'd you buy it? If it's new you should be entitled to amnesty upgrades.
V11 is the current version. V10 is probably the current preferred version as v11 isn't yet fully supported by a lot of plug manufacturers.
okay so i brought pro tools 9 since i heard so much good things about it , now my problem is i would like to put my sound back to be played on my computer and head phone but it only comes out of the head phones how do i fix that
You'll need to be much more descriptive.
What sound? system output? protools output?
What does 'on my computer' mean? Built in audio, interface?
Where are the headphones plugged in?
I'm not trying to be awkward; Your question could mean almost anything.
Generally, people use their interface for all audio output.
To do that your speakers (amp if applicable) would plug into the mbox outputs.
In Utilities->Audio/Midi Setup you'd pick the mbox.
That means everything comes out of your speakers + headphones....protools, itunes, youtube etc.
I'm pretty sure the mbox headphone output is a mirror output, meaning it doesn't mute the speakers.
You
should have a separate volume knob for each, unless your mbox is a mini.