Some promoters are funny.
Tell him to give you a memory stick and you'll stick the files on the card in whatever format he desires.
Or better still still someone who isn't such a dick!
MacBook, HD25's, Pioneer DJM-T1 Midi-Fighter Classic, 2x Stanton CMP800
Sounds to me like he doesn't have a cd drive to rip your mp3 himself. Just upload it to soundcloud and allow downloading, then send him the link.
Get a box account or skydrive and upload your mix to that. Give him the link to that.
Interesting that he wants you to take it from the most respected and smallest size/best quality file. To something thats not even a music related thing..