Don't reset stream statistics, always report absolute values

Ignore-this: 19a1210f2e0bdec3b4630db4e9521f52

darcs-hash:20130614112208-56b4d-f69635d382b5e1462ca3f384e6efa10403168346
Supply a single timeout value to AudioTransport

Ignore-this: c6e38ce1e827fa8f328fa74e86a4c9d2

darcs-hash:20130614112248-56b4d-2b303c3e88d6a4360f9da33a7057179bca1a3f0c
Fixed raising incorrect exception type

Ignore-this: ccd21b3d80626e0ae261d86994a160dd

darcs-hash:20130617090658-56b4d-f93bdf3a5edfee3660d9ada33573f3e1fc558bab