Macworld Expo, the mecca for devotees of all things Mac, happens about this time each year at the Moscone Convention Center in San Francisco. Which happens to be right in our back yard. We dropped by expecting to see one or two cool iPad apps, and got a lot more than we bargained for. In fact, it was practically a second mini NAMM Show (think Decompression versus actual Burning Man) packed with great music apps and accessories. Below are 17 videos of the stuff we thought was most relevant to your needs.

Our picks for hits of the show:

• Jammit, which we think just might be the future of learning licks. These people have negotiated with artists and record labels to get original multitrack masters, and the rights to put select tracks into an iPad or Mac OSX app that helps you learn your favorite instrument by mixing yourself into--and the original solo or instrumentalist out of--real songs by real artists you actually like. Frankly, we think this might be the future of learning licks. 
  
• IK Multimedia iRig Mic, the first condenser mic for iPad. The real treat here is VocaLive, a vocal effects, pitch correction, and harmony suite that runs on your iPhone or iPad. We're really impressed with the sound quality, and trust us--if you pick this up, you won't put it down.
• Algoriddim DJay : While a few of our friends with mad skills on Ableton, the wheels of steel, or the CDJs might beg to differ with the maker's claim that this software is "the future of DJing," it's one helluva lot of fun for the DJ-curious. It interfaces with your iTunes library and lets you effortlessly scratch, mix, beat-match, and apply effects to all your songs.
• MorphWiz MIDI: Though in a very early, not-even-beta-yet stage, this new app picks up where Jordan Rudess' MorphWiz left off. Where MorphWiz proper is a fully self-contained iPad synth, MorphWiz MIDI is a customizable multi-zone MIDI controller for external sound sources.

But there was plenty more, and if it wasn't good, it wouldn't be in this video roundup. Can't see the player below? CLICK HERE to open it separately.