re-encode all your MP3 and digital music files to 48.000 Hz but that's only a 10% overclock and in some cases even not an overclock at all, you would rather go to 96.000 Hz a full 100% or 118% overclock depending on original MP3 Hz which will give you some serious overclocking, also you can try to adapt the pitch or playback speed, which speeds up the speakers too.
seriously, you're rather misinformed to actually think boxes are able to be overclocked or anything, unless your post was MENT to be funny. in which case, you should know ... it is 🙂