Homosexuality is a sin? Well, Xtians, what about these other 76 things?

[Godscreated]

So, if I am understanding things correctly, the law of the OT no longer applies as a means to get to heaven but it does apply for defining what sin is.

Yes, yes and more yes.

Here is my question: If homosexuality is just one among many sins, why all the hubub? Why do so many people focus on that one thing? Where is the outcry over the wearing of mixed fabrics and trimmed beards? What makes homosexuality so much worse than all those other things?

Because to most people it is a repulsive thought and people tend to focus on things that repulse them.
As Drich said, I believe it was him, mixed fabric and trimmed beards were Jewish social law, which has nothing to do with our salvation.

Also, if you say that OT no longer applies, then why the outrage?

This is a clear case of cake/eating.

It does not apply to the way we receive our salvation, it applies to the way we live our lives before Christ and mankind.