Yes, it is possible to embed SharePoint metadata into an Excel 2007 file. Here are the steps:

1. Open the Excel file that you want to embed the SharePoint metadata into.
2. Click on the "Office" button in the top left corner of the screen.
3. Click on "Prepare" and then "Properties".
4. In the "Document Properties" drop-down menu, select "Advanced Properties".
5. Click on the "Custom" tab.
6. In the "Name" field, enter the name of the SharePoint metadata property that you want to embed.
7. In the "Value" field, enter the value of the SharePoint metadata property.
8. Click "Add" to add the property to the list.
9. Repeat steps 6-8 for each SharePoint metadata property that you want to embed.
10. Click "OK" to close the "Properties" window.
11. Save the Excel file.

Now, when you upload the Excel file to SharePoint, the SharePoint metadata properties will be embedded in the file and can be viewed by users without having to cut and paste.