Actually, this came to me when I was watching some shieks talking about music status in Islam, and referring to the famous hadith that says:
There will be a group of my people who will make permissible for themselves adultery, pure silk, intoxicants and musical instruments (English).
Now, some scholars say that because this hadith make it clear that musical instruments are not permissible, then it is haram.
What I know is that things and matters can be in one of three states regarding permissibility: Halah, Haram, and In Between. Now, the above mentioned hadith says musical instruments are not permissible (Halal), but that doesn't mean it is Haram as there is another category, In Between.
The question again: If something is not Halal, does that mean it's Haram?