Fixed MSRP transport used for contacting relay

Ignore-this: c55b7e7087247ae79a2efd8c14db1143

darcs-hash:20100519143714-1e3d8-9d3474eb3d0ba520d39233b9f0a09442e35e92ad
Fixed starting of recording on AudioStream while on hold

Ignore-this: 1f643bcd0cb763ba3fd360a7c09244b9

darcs-hash:20100519155421-1e3d8-5e0d1531e099576be2ba4f9ee6bf0098700bd75d