A qualification that just occurred to me:
I would suggest using the audio playback method just to get the words down, and dropping it immediately after that. If you use it too much, you run the risk of substituting the recorder's interpretation of the words for your own. If it's hard for you to separate simply memorizing the words from adding "flavor", then it's probably not a good method for you.
I've been practicing my Sonnets while cooking personally... it's the only time I have! Crap, hopefully I don't associate them with the smells of spicy food!
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~QC
"Acting is all about honesty... if you can fake that, you've got it down." --Oscar Wilde.
"You must unlearn what you have learned." --Yoda, Jedi Master.