16 Bit vs. 24 Bit Audio

Can you hear the difference between a 16-bit music file and a 24-bit file? Is one a better choice than the other? Here's an analysis and blind listening test to try and find out.
NOTE: The listening test included in this video does not contain true 24 bit audio. For an accurate listening test, please download the audio samples at this URL and follow the instructions:
www.mediafire....
Sorry for any inconvenience.
RESOURCES USED
"Digital Show & Tell" by Monty Montgomery - xiph.org/video/...
"Audio Bit Depth" - en.wikipedia.o...
Dynamic Range Meter 1.1.1 - dr.loudness-war...
Spek: Free Acoustic Spectrum Analyzer - spek.cc/
Audacity - www.audacitytea...
Foobar2000 - www.foobar2000...
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