Being in the distribution channel, I just got news of a new device by Belkin called the tune studio made for iPods. Retails for $250. Check it out.
http://www.belkin.com/tunestudio/Belkin's TuneStudio for iPod 5th generation (video) is the first 4-channel audio mixer that lets you create high-quality digital recordings directly onto your iPod. This mixer allows the input of up to four different instruments or audio sources, and records the audio onto your iPod for instant playback.
Records directly to iPod in 16-bit, 44kHz quality
Streams audio through built-in USB interface to and from a PC or Mac® computer
Each channel is equipped with 3-band EQ, pan and level controls
Phantom-power-enabled XLR inputs provide