you can now run multiple Audacious instances, each with its own configuration. Instances can be started with "audacious -2", "audacious -3" and so on, and they can be controlled from the command line with "audtool -2 <command>", "audtool -3 <command>", etc.;
new audtool commands were added: enable/disable stream recording and enable/disable plugins;
cuesheet support is more seamless, and it includes the following fixes:
more robust logic to prevent adding duplicate entries;
display artist correctly for cuesheets with only a single PERFORMER line;
add audio files normally if cuesheet support is disabled;
track lengths correctly account for pregap with libcue 2.0 or later;
folders can be added from various URI protocols (ftp, mtp, etc.) via GIO;
audio effects and equalization can optionally be applied to a stream recording;
search results can be added to the playlist using drag and drop;
option to display MMM:SS instead of H:MM:SS;
automatic selection of the best available output bit depth;
album artist support for FLAC and Vorbis files (read-write);
existing features ported to the Qt interface:
scrobbler setup dialog;
context (right-click) menu in the playlist;
copy-and-paste of playlist entries;
"Ppen Containing Folder" command;
desktop notifications and file deletion (via the appropriate plugins);