I think you are on the right track, as you say you'll need to either
- Provide Access to Wowza's content folder via your webserver config
- Save the FLV files to a folder, mapped to the webserver, as a test you could place them in htdocs
If you use a http player, such as this hosted example.
Then specify the HTTP URL to the file as the stream entry:
That should play. It will effectively be progressive download, so will play while downloading.