The problem is that I'm learning American Spanish and recordings on Memrise are made by Spanish from Spain. BIG difference!!!
Example, should I say seGuir, seGUir, or seJir? Spain: seJir Mexico: seGuir
The easy answer is right there: http://spanish.about.com/od/spanishpronunciation/Learn_Spanish_Pronunciation.htm This site informs the reader of the differences between countries. Check it out, it will help you tremendously.