Analog tuning with frequency overrides doesn't work on Windows 7 64 bit.

TV Server applies the frequency overrides to the 32 bit registry keys, but the tuner driver checks the 64 bit keys and therefore does not tune to the correct frequency.

h4. Steps to Reproduce
0. Install and run MP TV Server on Windows 64 bit with an analog tuner.
1. Create an analog channel, entering both the channel number (logical channel number) and frequency (override tuning frequency for the tuner).
2. Attempt to tune the channel.
=> tuning should fail as the tuner has silently tuned to the frequency associated with the channel number, rather than the override frequency.