Helium Music Manager is capable of storing entries in it's database that aren't directly related to a file. This can be extremely useful for you, if your music collection contains a mixture of different formats, e.g. Digital Audio Files, Audio CD's, Mini disc's and Vinyl records etc.
Start the Add Vinyl/Cassette etc. tool by clicking Tools | Database | Add Vinyl/Cassette etc... from the main menu.
You can add or remove tracks by using the plus and minus buttons.
The editing is similar to that of the Tag Editor (Spreadsheet Mode). Please see the Tag Editor (Spreadsheet Mode) help section to learn more about the different options and controls of the editing.
When you have finished adding and modifying your tracks, click the OK button to save these tracks to your database.