There must be software for a mac will do the same (prob cost £100).
zipping might solve the problem as it turns the tracks into a single file. trouble is, it would still be over 600mb and would take ages to upload and download.
mediafire only allow up to 100mb per file.
I don't really know about macs (got nicked for wearing a dirty one once).
maybe one of our new friends can help............all the best.........ed