A very common move. Also join au park parents listerv and ask there. Or when hanging around turtle park.

you'd love Meadowlark music for that age. we found it to be the most fun for our toddlers and we still talk to families we met there, even after the classes ended.
meadowlarkdc.com is their new site i think.

Red panda art has some music too
Many soccer options

My family are moving from Capitol Hill up to AU Park. We have a 2 year old and are looking for any recommendations on activities/classes/etc that folks enjoy in the AU Park area. Specifically, I'm looking for a toddler music class, some sort of toddler outdoor sport (he does soccer now), and a kid gym class.

Thanks!