I found this post in my RSS reader from the sports media columnist in the Hudson Valley, Ken McMillan, with the Mets Spring Training TV/Radio schedule.
12 games on SNY
4 games on WPIX
10 games on WFAN
More on this when I have a chance to look into it deeper. It doesn't count Spring Training games available on MLB.TV broadcast by the other team, MLB.COM, ESPN, or MLB Network.
Update 2/12 - the Mets released their version of the schedule today. At some point, I'll pull a composite schedule with everything available via MLB.TV (both TV and radio feeds).