how many songs can be downloaded?

There is no limit to the number of songs you can download. You don’t have to pay per song. Try a new song with no risk, if you don’t like it, just remove it. You can store up to 3,000 songs with a 4GB storage card, or up to 6,000 with the 8GB card(for devices requiring the Muve SD card) or potentially more songs for newer devices not requiring the Muve SD card.