DoubleTwist
From Eugene Eric Kim
For managing / syncing Digital Audio. Cross-platform (except Linux), including mobile.
Cons:
- Does not automatically refresh database when files are removed. Need to delete database manually and rebuild from scratch.
- Cannot write database edits back to files.
- Has some weird bug with sorting by track number. I think it has something to do with ID3 V1 vs V2 tags, but haven't verified.