No sound on logic software instruments

What software instrument have you loaded up?

I think the first thing to do is of course to consult the manual.

http://help.apple.com/logicpro/mac/9.1.6/en/logicpro/usermanual/#chapter=2%26sec tion=0

From the above link read: "Configuring Your Audio Hardware". (this includes the computer's built in sound).

You will probably want Built-In-Sound for both In and Output.

Also go to your Utilities folder and Open "Audio MIDI Setup", the Audio Tab will let you see the current setup for Mac sound, I presume you're listening through the Mac speakers? Make sure they're selected as the output.

Second is this.

http://documentation.apple.com/en/logicpro/

Choose: Exploring Logic Pro

From there choose chapter 3. Working With Instruments.

To use Logic, the user manuals are imperative, that is unless you have a solid background of using professional Audio/MIDI sequencing software.

<To use Logic, the user manuals are imperative, that is unless you have a solid background of using professional Audio/MIDI sequencing software>

But even then one could assume things which aren't there at all or the other way round. When trouble shooting logic 'user manuals' are essential and when you are a seasoned Logic expert you'll use it to double check the facts, because in Logic problems just aren't logic at all sometimes.

Cheers!

Es verdad mi compadre!