Glad to see this thread resurface, because I learned to love, love, LOVE Band In A Box this year. I signed up for "February Album Writing Month" (FAWM.org) where you have to write 14 songs in a month. I've been a frustrated, creativity-blocked songwriter for ages--writing, like, 1 song every 3 years for my mother on Mother's Day or whatever.
I'm retired now and have some free time, so decided to get the 14 done. I already had the most recent BIAB, and was determined to use it to speed up the process. I got all of my songs done. What follows is the best of the bunch, written from the first "head scratch" to its upload to YouTube in about 5 hours (as were all of my songs that month). My technique was to take a random song's chords and structure and a second random song's arrangement and input them into BIAB, then import over to accompanying program RealBand as discussed earlier in this thread to use the amazingly real-sounding instruments. Then I imported to SONAR and wrote lyrics and did my best with my own vocals. 5 hours, and I think this came out pretty decently. All music you hear, including the sax solo, is BIAB. Vocals are me:
https://www.youtube.com/watch?v=BZmBB9qZry4