Sounds sounds sounds ! I've heard that new sounds are on the way. I'll put them online as soon as I have them.
Also, thank you for feedback. Thanks to your post I realised that there is a bug in my code under Internet Explorer. I'll investigate the problem. If you cannot wait for the fix, do not hesitate check Firefox or Safari. Both are free and a (great) alternative to IE: the trailer is working fine with these browsers.