BoltApp is a new tweak available in Cydia that will allow you to import your music library or ringtone music from your iDevice without the need for iTunes. This application uses the library libipodimport (by H2CO3].import is done quite simply.
After installation, you will have an icon on the SpringBoard. Open BoltApp, then you can learn how to import your music, ringtones, and of course a browser to go select your music once imported into BoltApp. As explained, simply connect your device, then copy/paste into your music folder var/mobile/Bolt. Tweak is compatible with the iOS 6 and higher. BoltApp is available on the BigBoss repo.