Translation:The fork is broken, I need another one.
There are some patterns (eg. most nouns ending in -ag are feminine, as they’re formed with the feminine suffix -ag, but there are exceptions). There isn’t one obvious ending for either grammatical gender. So the best way is just learn all nouns with the article and some adjective, and after some experience you’ll get a bit better with guessing the gender of new nouns.
Could be the audio but for sure she slurs and clips words. I think it's good to listen to fast speakers who murmur and elide consonants etc. Her «feumaidh mi» is so casually fast I can barely hear "...maidh mi" as two sounds. When, in another exercise, the same speaker says «Nach e latha math a th'ann an-diugh» I'm not sure I hear all the syllables, I know they're there and being pronounced, I just don't hear them distinctly. Slàinte.