For those lurkers and RB3 holdouts, there is some progress, although it is by using rawksd indirectly.
http://rockband.scorehero.com/forum/viewtopic.php?t=36077&postdays=0&postorder=asc&start=0
Been on this for years. Without unpacked a legit RB2 or RB3 DLC and packing in custom data, you cannot get rawksd to work with RB3. Yes there is a screenshot of customs in RB3 with a unreleased RawkSD; however, we see that will "never" happen.
Awesome, so you load though Uniiloader? This is the only thing I have yet to tackle with RB3. Also given that the DLC is over :cry:. I have played around with trying to edit RAWKSD so that it would make DLC files in folders that could be added to RB3 but without any luck. I don't really...
Pretty sure it is a memory issue. The game just can't handle anymore songs such a people who have freezing then they get close to 1,000 songs. But what do I know?