Bristol_Jonesey
That's what I use inside Goldwave Paul
AArron (?) did a thing for LAME and sonar, dunno if he has x2 yet though.. he posted a few bits in the dev bit..
http://forum.cakewalk.com/tm.aspx?m=2268643 basically adds encoder options for x1.. not tried it for x2 though (hard drive crash kept me busy)
for what it's worth my cubase dongle has an expired mp3 encoder license on it.. so I assume the makers charge for it.