Those of you with children, younger siblings or a LEGO fetish may want to send Harmonix a fruit basket today, because it's been revealed that anyone picking up LEGO Rock Band will be able to export its tracks.
So if you own Rock Band, Rock Band 2 and LEGO Rock Band, you can put all your songs in one place, and never have to swap discs ever again. Like Rock Band 2's import feature, there'll be a small fee, but as Rock Band 2 showed, people are willing to pay for that convenience.
Rock Band News: Lego Songs Exportable, Deets on Queen, White Stripes [Wired]