Yikes... I have an MP3 Soundwave coming in the mail and am worried now. I hope he is not DOA. I really don't care about the MP3 functionality but would at least like to know that I have a working one. Do you have a brand name SD card, i.e. Sandisk, Kingston, etc.? If its a cheapo one then perhaps Soundwave won't recognize it.
Unfortunately as I had expected the 1GB card didn't work either. I now have tried a 2GB micro, 2GB mini, and a 1GB mini (all Sandisk) and all I get is a couple rapid fire flash sequences and no sound. When I bought him earlier this year he did work with the 2GB micro card. Oh well, it looks like he is fried. Although I am still open to any other suggestions...