[yavuzj]

OK. I may be mistaken since I have not tested this.

Try adding an Aux Track.
Choose the input as the physical input of the instrument that you want to hear.
Send the out put to a bus. then create an audio track and choose the input of the same bus.
Then you should be able to hear w/o record enabling.

If this gives you problems,
then you can create an aux track and choose the input as the input of your instrument.
THen create and audio track and choose the same instrument input.
Play along thru the Aux track and
when you want to reacord, record enabl the audio track but remember to mute the aux track.

I hope this was not so confusing.