Fixed AudioStream to take global codecs into consideration

Ignore-this: 3dcfd3ebf866a04e8a26c985e69710d0

darcs-hash:20090828094630-1e3d8-cbf57b9d648cd15f2cbe82e62f0055e2ee2179c4
Added AccountSoundFile configuration type

Ignore-this: 9ba50b4b270ac72f397bc35bae992ec3

darcs-hash:20090828103709-1e3d8-97617c59a3ca52d5048b1563616450ee21c6a114