Question about working with an audio interface

Hi
I just bought an audio interface (tascam us-122l) and i have logic express 8 installed, so i've connected my guitar and my keyboard (via MIDI) to the audio interface, and i've read the user's manual but i still don't know how things work...
Is it possible to use the built-in speakers on my imac as a sort of "amplifier". So when i play on my guitar or keyboard, i can hear what i'm playing trough my imac.
This is what i did so far;
- installed the drivers and updated the firmware
- system preferences > sound > input and clicked on my audio interface (US-122L)
- LE8 > preferences > audio > devices > and i selected the US-122L as device
This might be a stupid question but i just want to record songs.
Thnx anyway.

Logic audio preferences assumes you want to use your interface as an output for monitor speakers - the standard way and the best way given that your internal spekers will be neither loud enough or good enough to act as great monitors. If you don't have speakers you will be able to hear what you have recorded through headphones connected to your interface. If you want to listen from imac speakers or audio out you do indeed need to change to "built in input" - this is just a name logic uses to refer to your imacs internal sound card (including input and output).
To separate the input and output for different devices you need to set up your aggregate device, which you should be able to do, though you say you can't.

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Message was edited by: Jerry Hofmann

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Question about working with an audio interface

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