Sony Connect (SonicStage)
Full user review
None it doesn't work.
This is useless as it isn't compatable with earlier Sony MP£ players and managed to wipe all 18GB of music off my MP player. There should be a warning that this is possible, prior to allowing access to your player. If I could I would demand compensation for the loss of all the music on my player.
Please do not download this if you wish to keep your music.