If your audio files are encoded by DRM, you are not able to mark lyrics to those files. LDB Manager is a lyrics auto input application used in the COWON products. COWON M2 must be connected to the Internet for this feature. How to use LDB Manager - Select the audio file that you like to get lyrics from your COWON i9+. - Click the "Mark" icon, then LDB Manager automatically marking the lyrics to the audio file. - Set the Lyrics "ON" on your COWON M2. (Settings ->Display -> Lyrics) - Lyrics will appear when the marking file is played on your COWON M2. - With the lever you can come cross the windows from file info to lyric display. - You can simply turn off the lyric feature from the menu. (Display->Lyrics->OFF) Icons 1. Mark - You can automatically add lyrics to music source files. - Select files from the list and click the Mark Lyrics button to add lyrics to the files. (Multiple selections are allowed) 2. Search - Manually adding lyrics to music source files. - Select a file from the list and click the Search Lyrics button.   Then select the desired lyrics from the lyrics search window. 3. Remove - Delete lyrics from music source files. - Select a file from the list and click the Delete Lyrics button to delete lyrics from the file. 4. Edit: to create your own lyric - Select file that you like to edit, then press 'Edit' button. - You can enter lyric through 'new' button or use 'open' button for edit existing lyric. - If you like to edit exist lyric, and then double click the part that you want to edit. - Once that editing is completed, play the music through '>' button or 'X' button from keyboard. - Matching with lyric and music through 'Set Sync' button while music is playing. - If all the process is completed, then click "Mark" button to write this lyric to current file. - You can exit through 'Exit' button. - You can get more information about the keyboard through 'Option' button and you can edit it as well. 5. Refresh - Refresh list.