How much memory does the device have, and how much music can it store?

The 8GB in-build memory can support Music (eAAC+) up to 5,900 tracks (capacity is based on 3:45 minutes per track with 48 kbps eAAC+ (m4a) encoding on the Nokia Audio Manager). Capacity with 128 kbps AAC encoding is up to 2,200 tracks. The actual capacity depends on the size of the music files.