I've bought a copy of MakeCD a few months ago and set the buffers at 4MB and everything works.

I use a small CLI-util (forgot the name of this util) with DirOpus4 to translate MP3-files to AIFF-files and these files I burn succesfully on a cd as audio-tracks.

And yes, I'm also waiting for the new BurnIt (because of DVD-support )

Spidey