Upload Types modules, & useragent stylesheet with audio cues.
Prevent websites (and userstyles) from overriding the link audio cue.
Download CSS assets, including new useragent audio cues.
Audio cues are public domain from freesound.org and archive.org via elementary OS's sound theme.
Use libsndfile to write audio files.
Import libsndfile, prepare to use it for writing audio files.
Fix linking error, didn't expose Types.hs
Export C APIs from files defining underlying functions.
Output converted webpage.