Airtime fine - IceCast fine - but stream sound?

Everything appears to checkout fine:

root@vps[/email]:~# sudo airtime-check-system
CPU = Intel(R) Xeon(R) CPU X3450 @ 2.67GHz
Total RAM = 524288 kB
Free RAM = 107372 kB
OS = Ubuntu 10.04.2 LTS Intel 80386
AIRTIME_CONFIG_FILES = OK
POSTGRESQL_DATABASE = OK
PYTHON_KOMBU_VERSION = 1.1.6
PYTHON_POSTER_VERSION = 0.8.1
RABBITMQ_SERVER = OK
AIRTIME_VERSION_URL = http://localhost:80/api/version/api_key/%%api_key%%
APACHE_CONFIGURED = YES
AIRTIME_VERSION = 1.8.2
PLAYOUT_ENGINE_PROCESS_ID = 6072
PLAYOUT_ENGINE_RUNNING_SECONDS = 609
LIQUIDSOAP_PROCESS_ID = 5568
LIQUIDSOAP_RUNNING_SECONDS = 615
ICECAST_PROCESS_ID = 5836


Front end is up and running
http://69.90.148.151/login


IceCast2 appears to be mounted and connected:
http://69.90.148.151:8000/


But not getting any sound on the streams:

http://69.90.148.151:8000/airtime.mp3.m3u
http://69.90.148.151:8000/airtime.ogg.m3u