Sometimes you get all that music in flac format which is not understandable by hardware players, so you need the mp3s. Just cd to a directory which contains them and issue the following command:
for file in *.flac; do $(flac -cd "$file" | lame -h -V 0 - "${file%.flac}.mp3"); done
1. This works really well. However, you fail to mention you must install these tools first in order for this to work:
# yum install flac lame id3lib
2. What quality of mp3 does this convert to? I would hope the highest. They do still sound really good after converting. Let me know, thanks.