What is the fine-grained topic of the following text: Music quality matters a lot, and while for many people the 128 kbps MP3 files they download from Limewire might sound &quot;jut fine&quot;, I rip my music at 256 kbps in MP3 format and if I have to buy digital copies of music instead of CDs I try to find the highest bit rate possible. Only return the topic.
Quality and Bit Rate of Digital Music Files