It's how you learn to understand real-world speech. Play it over and over, and track the words with a finger. Using a headset can help.
Also -- be aware that the words tha and thu often sound like AA and OO, and that th sometimes seems to drop out almost entirely in the middle of a word. And that Scottish words are always stressed on the first syllable -- so I think they depend on listening for the stress rather than the kinds of breaks English speakers listen for. And see: https://learngaelic.scot/littlebylittle/sounds/index.jsp
Hahaha. Don't be unkind to yourself. We expect the name to be more or less similar but they change the vowel on us, from an 'o' to an 'a'. I have a hard time remembering that one too. Whereas 'a' faireachdainn' is so distinct from the English, that we don't have any expectations of how it should be written, so we just learn it.