Yeah, but he indicates a problem with MLB.TV. I'm not sure what the problem is, but I know that I could never get live games to work (and I tried it on both Internet Explorer and Firefox). Archived games or the audio feeds were no problem, though.
The best thing I can think of is either three things:
Do as I suggested and "move" into a market where he will get the Regional Sports Network for one of the AL East Rivals (Tampa Bay, Baltimore, Boston -- I know, but Toronto is not available) where he will get, from what I can figure, 19 games against the Yankees. He can then order WWOR where he will get around 15 - 20 games (if my own memory serves me correctly). If he figures the move correctly (by looking at the blackout map), he can put himself somewhere where there is more than one team and he might see more games than that.
Second, there was a guy on here a few days ago (from somewhere in Iowa) that indicated he would be getting several RSNs as part of his basic package that put him into the markets of six teams (three American League teams and three national league teams). Do that and you'll see the three American League teams play them several times (and maybe even some Interleague play) and, along with WWOR, you'll get more than a few games that way. (I'd love to take the Iowa option, but then I lose SportSouth -- so, yeah, go figure...
And third, you could move over to DirecTV where you'll have access to the Extra Innings package. I know this isn't what you prefer, though, based off of your original post.
Cade