The remote host is missing an update to synaesthesia announced via advisory DSA 681-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20681-1

Erik Sjölund and Devin Carraway discovered that synaesthesia, a program for representing sounds visually, accesses user-controlled configuration and mixer files with elevated privileges. Thus, it is possible to read arbitrary files. For the stable distribution (woody) this problem has been fixed in version 2.1-2.1woody3. For the testing (sarge) and unstable (sid) distribution this problem does not exist since synaesthesia is not installed setuid root anymore. We recommend that you upgrade your synaesthesia package.