Mp3 file directly in a Database Without using BLOB
There is probably no way to have a binary piece of data (file) stored in a database (either relational or non-relational, NoSQL, that is) as "not blob" and without any need to decode it at the same time. 


If you don't want to decode it, store it as a BLOB.
If you don't want to store it as a BLOB, store it as a CLOB and then decode it.
If you want neither of the above, consider another means of storage
Accessing a database directly from "outer world" is generally a bad idea.