Locale 1.0 offers significantly improved location detection that should solve this problem. You don’t have to do anything to configure it; Locale 1.0 handles this automatically. The solution doesn’t work exactly as you’ve described here, because the solution in Locale 1.0 is better :).

Locale 1.0 is available on the Android Market today in countries that support paid apps. Full release notes are here: http://www.twofortyfouram.com/notes.html

This is now supported with the combination of Locale 1.0 and the “Locale Headphones Plug-in”, both of which are available on the Android Market in countries that support paid apps.

Locale 1.0 supports plug-in conditions, so many more exciting features are coming soon :)

A plug-in to control media volume will be released in the near future :).

Wi-Fi location training is now available as a feature in Locale 1.2. It can be found under the Menu of the Location condition.

We strongly discourage the use of third party location conditions or Wi-Fi conditions. These are less accurate and require more battery power. Instead, users should use the built-in Location condition and use Wi-Fi training if necessary.