However, the software with the receiver is really basic...

It does exactly what it's supposed to. It's not, by any stretch of the imagination, supposed to be an MP3 management application. You're supposed to use it in concert with another MP3 management application.

Feel free to check out the other software linked from this BBS, but they're not MP3 management solutions either. They do, however, improve upon the basic serving functionality of the stock software.