The Death of the Music CD
Rick Zeman writes "According to the Washington Post, the next new music format will be...no format. From the article: 'What the consumer would buy is a data file, and you could create whatever you need. If you want to make an MP3, you make an MP3. If you want a DVD-Audio surround disc, you make that.'"
FLAC actually takes very little CPU power to decompress; less than MP3, certainly. But they only compress to about 50% so a CD full of them could only hold two albums instead of one, which isn't gaining a whole lot. So I tend to leave my FLACs at home and convert them to something lossy to take with me.
Ita erat quando hic adveni.
MP3s lose information due to their compressions scheme. So if you converted from and MP3 to OGG to WMA you'd end up with file missing all of the information from each round of compression. Using a lossless encoding format, like FLAC or WMA Lossles, would allow you to copy to whichever media format you prefer.