Hi @Stoic ,
It’s probably something really easy to fix, but could you upload your .blend file to Dropbox, googledrive, or so and post a link here, please? Then we can also see what’s going on with those red outlines (Dwayne is probably right, but the we know for sure).
Or try Selecting the (Faces of the) Speakers in Edit Mode and Assigning the right Material. See also: https://cgcookie.com/community/22049-material-not-on-the-screen-and-speakers
