Cannot Get Any Midi Audio Output - Help!, using built-in sound controller Options

[cgramly]

Hello,

I am brand new to this so please be patient with me. I have searched for an answer to my question but haven't found one yet.

I have a G4 laptop and an Oxygen 8 midi controller. I am trying to experiment (using Logic 6 software) with virtual instruments. So far I am playing around with the sample tutorials that came with the software.

There is an Audio tutorial and a Midi tutorial. I can open and play the Audio tutorial, but only hear the audio tracks, not the virtual instruments. When doing this I get audio output to my speakers via the minijack on my laptop. When I open the Midi tutorial I cannot get any sound when I play the recording. I am also unable to get any sound when trying to set up my own virtual instrument in a new file. My problem seems to be getting any sound via a virtual instrument.

I have set the audio hardware & drivers settings to use the 'built-in audio controller' which I assume is my sound card. I also checked a box in the midi assistant (OSx) under the audio tab that says 'playthrough.' This was a guess on my part.

Can someone give me some advice? I plan to buy an audio interface but want to at least hear a few things in the mean time. If anyone has any suggestiongs I would greatly appreciate it.

Thanks!

-Chris