So far, the recordings I've done since upgrading to 3.0.3 have been played with a translucent image of a speaker cone overlaying them. I haven't found a way within EyeTV to turn that off, but I have found the problem and a simple fix if anyone else is having this trouble. This has been reported to El Gato.

1. Select the recording to fix within EyeTV and use the Show In Finder command (or whatever it's called) from the context menu.
2. Quit EyeTV.
3. Bring up the context menu for the recording and select Show Package Contents.
4. Open the file with the eyetvr extension in any text editor.
5. Search for a line containing the text <key>has video</key>. The next line will be <false/>.
6. Change that next line to say <true/> and save the file. (If you're using TextEdit make sure you don't change to RTF in the process.)

When you next launch EyeTV, it'll recognize that the file is more than just audio and won't overlay the speaker image. EyeTV must be quit, because it caches this information and may rewrite the file on exit.