The spotify linux client license conditions are explained in [1]. These
includes:
   - This package is made by some spotify employees on their spare time.
     It is deliverad on a as-is basis and without any support.
   - You may not re-distribute the package

Besides these linux specific restrictions, all use of the spotify streaming
service is governed by [2]

[1] https://community.spotify.com/t5/Desktop-Linux/bd-p/desktop_linux

[2] http://www.spotify.com/us/legal/end-user-agreement/

