calls can be downloaded as an mp3
404 when requesting audio the server doesn't have

also, don't show a link to audio that doesn't exist.
add a recent view to show the last day of calls
stub out some pages that aren't resources

brought in my state machine library
start the player UI; grabs the recent calls and makes a table
create an audio tag for each call

Also, swap to using oga since Firefox can't do mp3 on Linux. Format
conversions and format testing are for the future.
fix brain-fart; store the files in year/month/day/hour

as opposed to year/day/month/hour, which doesn't make any sense.
show last 50 calls regardless of date
upload script to load some test files into the database
can play calls, and move back and forth in the call list

Also, sprinkle on some css
show talkgroup name instead of id; format dates
capitalize table headers