No problems with MAKECD!
I burn 112-128kbps MP3 on the fly at 2x with my 060 (NOfpu mpega.library).
Just select the MP3's as CDDA audio. You also can select to make images of it and burn them afterwards. This always works.
About the glitches. Yes, there are unfortunatly, but if you select ignore, you won't hear a thing AFAIK.
Otherwise you can use the libMAD version of MPEGA witch gives you better quality and I never had glitches with this one
(although I can forget on-the-fly burning ;-)).
Cheers,
Mendark