A. Not if you expect great results. Phono input on a stereo system adds a special EQ to the signal, as well as "Pre-Amping" the signal. For good results you’ll want to plug the turntable into a regular stereo system, and then take a Line-Out from the stereo to the Line-In on your computer (for potentially better results you can use a USB or FireWire interface instead of the Line-In).
GarageBand from Apple Computer uses audio loops and MIDI loops in Apple Loops format. It can work with Audio Units plug-ins. Apple Macintosh Compatible FireWire and USB interfaces can be used to connect Audio and MIDI instruments to your Mac, and be recorded into GarageBand.
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