To answer some of the questions, there are 9 in the pack - Princess, age 8, Chloe who is 7, Lottie and Tanna, both 6, JoJo, 4, Joe and Jack (littermates), 2 1/2, Bella, 2 and Angel just turned 1.
How do I transport them? Well, obviously I can't get all 9 in a Toyota - so I don't transport them except to the vet - and that's usually one at a time.
Can I tell apart by their voices? Yes, for the most part I can tell who's barking. However JoJo and Jack (mother and son) sound very much alike and they both have the same bad habit - if they finish their chewey quickly they'll stand and bark at one of the slower chewers - sometimes I have to look to see which one is yapping.
I'd love to get a video of them all baying, that is quite a sound treat for beaglers (tho not for anyone else), but they don't usually bay outside - and they're not usually all together when in the house. Since I have a 3 story house, some are usually in the family room and some on the main floor. Will keep trying though.