Withdrawn: No more blurry album covers!

[Miss Sissy Princess]

Alternatively, you could ask a question of the users like "According to Nyquist's Theorem, what is the highest audio frequency, in KHz, that can be encoded with 48KHz sampling?"  If they answer wrong three times in a row, put up a message that reads "You don't need to access the hidden controls. Just go back to the album view and look at all the pretty pictures."  

That's a vague and tricky question.  

It is neither vague nor tricky.  The answer is 24KHz.  No album art controls for you!

Nyquist's theorem says nothing about audio frequency in particular as that's a biology thing about what's audible and for sampling in general Nyquist's theorem does not imply an absolute maximum frequency that can be sampled and reconstructed for a given sample rate.

You are misinformed.  The Nyquist theorem states unequivocally that an analog signal waveform can be reconstructed from samples taken at equal time intervals if the sampling rate is equal to, or greater than, twice the highest frequency component in the analog signal.  It applies to all frequencies, including audio.

See:  http://sites.music.columbia.edu/cmc/Musi.../02_03.php

Therefore, the maximum frequency you could record with a 48KHz sampling rate is 24KHz, a sound outside of your hearing range but well within the hearing range of many animals including dogs and cats (https://upload.wikimedia.org/wikipedia/c...ge.svg.png).