Nope. "Da iawn" = "very good", more or less.
I'm a Welsh native re-learning after living abroad, so I know that's right :-) On its own it's like "OK", but after another word it's like "very" or "well".
More info here: http://www.forumwales.com/fwforum/viewtopic.php?t=8364&f=45
Same for me.
And her "teits" sounds like "deits" to me.
I wonder whether unvoiced stops are unaspirated in Welsh, as they are supposedly in, for example, French? And that I'm hearing the unaspirated nature as more salient and matching it with the voiced unaspirated stops /b d g/ rather than the unvoiced aspirated stops of English?
It definitely does... but in the slower one it sounds more obviously C, which is odd... in a sentence however, aka Dwi'n hoffi gwisgo crys T - it tends to sound G like how Cymraeg changes to Gymraeg in certain contexts... so t shirt said alone would sound Crys T... but in sentence sounds Grys T
could be the language sample was taken from a sentence ...