The whole sentence sounds ok, but "bea" itself sounds like "da" when I mouse over it.
I thought the same. The word "bea" sounds like "da" on mouseover, but not when listing to the whole sentence.
Eu beau (I drink), tu bei (you drink), el/ea bea (he/she drinks) etc. The verb has different forms accordingly to the related pronoun.
Possibly because a lot of European languages have different forms or endings of words, depending on who you are talking about or speaking to. (Take Spanish's 'tener' forms- there are six different forms, and four of them throw an 'i' before the first 'e')
When I use the browser or even the app on mobile, it hardly ever works for me. Very random when it does.