Yeah . . I didn't realise Select in Media Pool/List was there in Vegas5 too! I've been "visually" locating V5 events within MedPool. I could have been easily replacing from the Media/Project List, in V5 too.
Now that I've "shared" this I feel kinda dumb! - Twit!
For what it is worth, from the file in Media Pool (rt clik) you can select all of its events in the timeline - now that should really knock your socks off