is it possible to tag the audio tracks on an AUDIO CD so the "Numark CDX" can read tracks ?
I'm not realy sure, but I think this isn't possible. Mp3 works in a different way than audio CD's. The CDJ-1000MKII can read track titles, which are tagged in a different way then mp3's. In your CDX manual you can read if the CDX has this feature.
I use Nero burning rom, TDK and now more often Verbatim Vinyl CD's (heh heh
), burn at 8x. Back up copies of original CD's with 'disc-2-disc' option, and music downloads, with option 'audio cd' in one session. No problemo. Those discs were used on several players like the Numark Axis-9, another dual player of Numark, Denon DN-S 3000, and my own Sony and Panasonic stereo (family of Technics) and Stanton dj cd players.
I've read somewhere that you shouldn't burn too fast nor too slow. Too fast and it's obvious that data will be skipped, too slow, a little less obvious, but the layer will be burned too much resulting in poor or unreadible data. I'll try to find the article, but it seems I have deleted it. The lower limit of the recommended speed of the CD manufacturer is probably the best for audio applications.