I sure do! It's got a sort of woody quality about it.
It sounds rather tinny
Ah, yes, such a woody, woody word: "gooouurm, goooouurm."
I'm kind of confused about the r in gorm. It sounds slender to me but shouldn't it be broad because it's preceded by an o?
It is broad. You may be confused by the guta cúnta, or "helping vowel", which occurs between certain consonant pairs. You can hear it in words like dearg, gorm, leanbh and Albain. rm is one of the consonant pairs that this occurs in.
That's probably it. Go raibh maith agat!