Scratching ;)
Multiple turntables
Built-in Sequencer
Pitch / Volume settings for each turntable
Effects (Lowpass/Echo) configurable for each turntable
Syncing tables to one master turntable
Broad audiofile-type support through the use of sox and mpg123
Recording (straight to disk now)
Save turntable sets (.tX - files)
Support for the LADSPA-plugin-standard.
and more