There are sooo many bug in your AirBrowser. Accidently I found the zip file In "C:\AirBrowse" then I extract it. It work and launch from desktop !
but then I got this bug when using Youtube Downloader Extension :



And I have found out the feature that not in AirBrowser, select all in textbox. you can see how chrome work ? when you click the address bar it select all text in that so user can easily delete or copy-paste it.

But what I like is when you download the extension, like youtube downloader it's will add download to mp3 in youtube.com. WoW I don't know how you make it.
And the theme, app center, extension is so cool ! I love to make one extension/theme but I don't know how.

And one more thing, if you want installer I can make one, just ask . Instead of downloading .zip file, you can download a .exe file and run the installer. And too bad, when you uninstalling AirBrowser, the uninstall.exe is still there. It should delete it too.

You can try this :
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.MouseDown
       TextBox1.Focus()
       TextBox1.SelectAll()
   End Sub

Remove beep sound :

'This code needs to go into the Textbox_KeyDown’ event.
If e.KeyCode = Keys.Enter Then

   e.SuppressKeyPress = True

End If