Here's a tip: if you can arrange your "week" to go from a Wednesday to a Wednesday you can, in theory, see 12 shows:
2 on both Wednesdays, 2 on Sat, 2 on Sun and 1 a day Thu, Fri, Mon, Tues. Since I do theatre reviews and interviews, when I go to New York I try to cram in as many shows as I can, and usually cannot go back and cover shows I have already seen.
If you are going in the next few weeks your priority should be trying to get into as many of the potential Tony nominated shows as possible (PIAZZA, LITTLE WOMEN, DRS, SPAMALOT, CHITTY CHITTY, ALL SHOOK UP) and a visit to FORBIDDEN BROADWAY is always a great "finale" to every trip. Beyond that, try and catch any of the Tony winners you haven't yet seen: AVENUE Q, HAIRSPRAY, or PRODUCERS.
It's great for people in the New York area to keep going back to see WICKED and RENT over and over, but it's a luxury us out-of-towners can't really afford.
Cast albums are NOT "soundtracks."
Live theatre does not use a "soundtrack." If it did, it wouldn't be live theatre!
I host a weekly one-hour radio program featuring cast album selections as well as songs by cabaret, jazz and theatre artists. The program, FRONT ROW CENTRE is heard Sundays 9 to 10 am and also Saturdays from 8 to 9 am (eastern times) on www.proudfm.com