Thanks - another question...
For the first question, not at all. Sometimes the simple answers are the most elusive, and this is a good example. Who would think to look for the term "melody" when describing "the startup sound"? Everyone calls it the "startup sound". No worries.
For the second question, Closed Captioning was historically an analog transmission on top of another analog transmission. With the switch to digital, you can't play one digital transmission over another. So, the source content needs to process any closed captioning at the source, and then send that completed signal to the television.
Some cable/sat boxes may offer this feature (where broadcast), but for DVDs and Blu-Rays, you'll have to enable subtitles (where available) in the discs menu.
Does that help?
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