Blue Jeans has this on their site. It is more flexible than others and will work fine for your application. If you really need extra flexibility, I suggest getting the cables long enough so you can let them rest on the floor for support and then they can avoid real sharp bends and twists. Just remember to keep some distance between them and power cords for best performance. You could also try removing the back panel altogether. Cutting more/bigger holes is what I would try first.

Belden 1505F:
Belden 1505F was our recommended audio cable prior to the introduction of LC-1. It also has double-braid shielding, and is a bit thinner, more flexible, and more economical. If you will be wanting to have your audio cables bundled together in Techflex wrap (see below), we recommend 1505F because LC-1 becomes quite thick and heavy when bundled and can pull hard on equipment jacks. View the technical specs for Belden 1505F.