LG Rumor2 / Cosmos / Banter / UX-265 / Script

I am having trouble with the music player. I previously had an Instinct with an 8GB SD card. I switched to the Rumor 2, pulled the SD card out of my Instinct and tried playing the music. Now, all of my music files are ripped with WMP in WMA format. The Rumor only recognized about 120 of my 1100 songs. So I went to other forums and they suggested formatting the card, and trying to re-load them. I did that, then tried to put some of the songs back on the card that were not working before. These songs still did not work. The Rumor tells me it's an "invalid file." I do not have the USB cord that's compatable with the Rumor - I just insert the SD card in my computer's slot and drag and drop my files. Has anyone had this problem and foun...
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