initial page load is too slow

[violet4]

• pydub AudioSegment.from_file loads the entire file at once, at least by default. check if it can lazy-load the file instead.
• and/or use LRU to keep the past 10-or-so accessed episodes in RAM.

[violet4]

already fixed the issues mentioned above but it's still not quite as fast as i'd like. i outlined an algorithm in one of my recent blog posts that involves never reading the entire file from memory at once, but instead loads based on what segments are requested. the more consecutive segments are requested, the more consecutive segments are loaded from file, doubling each time.