{I} pronounced too closed (like /i/) in some recordings

{I} should be pronounced /ɪ/, but it sounds like /i/ in some recordings. I noticed this in audio_bif.mp3 and audio_bir.mp3 - it's particularly conspicuous in {bIr} which sounds like "beer". These assets should probably be re-recorded. It's possible that other recordings have the same issue, though I haven't noticed it yet anywhere else; for example, it sounds just fine in audio_xi0.mp3.