Fixed disconnect after 15 seconds when early media is received

Ignore-this: 71bf4a653bb81546993b2a734318eb8d

darcs-hash:20091005083248-1e3d8-284c11234df6eef73ead3206ea53ccee6db91a50
Modified return value of audio callback to avoid accessing deallocated data

Ignore-this: c0b62daed301727aa3f935d2588448c4

darcs-hash:20090911075909-1e3d8-8699a5dde6b0cdd73d0284cbe066f41d018e4f8a