ubuntu 11 upgrade problems from ss 4.6 to 4.7b2

[lars mars]

well, to make it short. i run ubuntu 11.04 64. ss 4.6 is running generally fine. when i try to upgrade to 4.7b2 i get the following errors:
1. trying with ubuntu software center:

the package is of bad quality

The installation of a package which violates the quality standards isn't allowed. This could cause serious problems on your computer. Please contact the person or organisation who provided this package file and include the details beneath.
Lintian check results for /home/lsdeep/Downloads/subsonic-4.7.beta2.deb:
E: subsonic: arch-independent-package-contains-binary-or-object var/subsonic/transcode/ffmpeg
E: subsonic: arch-independent-package-contains-binary-or-object var/subsonic/transcode/lame


2. trying with terminal

dpkg: error processing subsonic-4.7.beta2.deb (--install):
cannot access archive: No such file or directory
Errors were encountered while processing:
subsonic-4.7.beta2.deb


anybody has a tip/ solution???

thx in advance
lars

[lars mars]

anybody with any ideas/ any additional info needed for solutions?

thx, lars