Bible interpretation

I have been studying Romans 14 a lot lately. In this thread, I am interested in intensively exegetical and theological discussion about what Romans 14 teaches about foods, days, and worship music.

Paul begins his teaching by saying the following:

Romans 14:1 Him that is weak in the faith receive ye, but not to doubtful disputations. 2 For one believeth that he may eat all things: another, who is weak, eateth herbs.

In my comments in a previous thread that I did not start, "On Bible Interpretation, Evidence, and Music," I provided evidence from Scripture that important doctrinal information concerning sound demonology is found in the details of some passages, especially narratives, that many believers likely have not profited from as they should have.