I have 2 problems. One is that I'm plugging a speaker by Altec Lansing, that I've used on my macbook, and it doesn't seem to be recognized on my macbook pro. I've checked system preferences and it doesn't show up anywhere. The other problem is that I'm trying to record something with a microphone and it's just not recognizing that either. I've checked on the garageband settings and system preferences, but it doesn't show me an interface or anything. I have everything plugged in like I normally do, so I just don't know what the problem is. The internal mic and speakers work well, though. Anyone know what the problem could be? Thanks!