Running LSM 7.7.2
SB Slimserver

I can't see Spotify app in the server, but can in the iPhone app. When I try to play a spotify playlist I get the following error message:

[12-04-06 14:36:42.0198] Slim::Player::Song:pen (409) Error: Couldn't create command line for spdr playback for [spotify://track:4HfjBmGWpdB5djHwFa7Xcy]

Any ideas?

TIA