has received three additional song-packs so far, and the in-game music library has been extended again. The fourth song pack adds three more songs, but like its three predecessors, it doesn't add any more achievements.
This is Rhythm Party Song Pack No. 4. New songs and stages have been added. “INSIDE YOUR MIND” by Limahl, “The Sunbeam” by Des-ROW + XX, “bag” by RevenG.
"Song Pack No. 4" costs 240 MSP and can be downloaded from here