We all know Bieir made their name with sounds for the Tamiya truck and construction RC models and associated lighting features . Having umpteen circuits may be fine for a truck but tanks? A truck with trailer could have at least 10 lighting circuits .I will wait and see if a Mac App is available , not going to buy a WINDOWS laptop for programming. 2 problems for me the cheaper HL looks like it does not support the Tamiya recoil and on reviews the dearer one is costing about 340 euros (price of package from the review ) and you need a mini board with resistors for lighting. Now rather than telling us how good the board is Rad and Tankster could have posted a video of the boat and tank to show the plus points of Bieir units . Loading sounds onto a board that allows you to import sounds is very easy with the Audacity program , just import a sound and covert to WAV .