I wonder if we'll ever see the day HMX once predicted....that tracks from Lego/RB1/etc eventually get licensed as DLC as the original game discs disappear from retail....
For now, I think the best hope Wii rockers have for getting Lego tracks is if HMX tags more of those songs for RB3/Pro upgrade versions, a la Bon Jovi & Queen.
So, yes or no everyone; will Wii owners ever see the day when we get to play RB1, Track Packs and Lego Rock Band songs in RB3?
Probably not. Those games were never meant to export and never will. Blame Nintendo for not putting a HDD in their console.
Also, there is no real need for 'exporting'. If HMX could, they would be able to put up the songs for download in some appropriate manner. The roadblocks, however, are the same in any case. Previous licensing deals prevent this from happening at the moment and/or Nintendo doesn't like 'free' content.
Both RB1 and LRB songs will become available for the Wii as soon as HMX (and all relevant parties) can get everything sorted. However, this is unlikely to happen at this point.